Mines in Skagit County, Washington
468Total
91Active
Skagit County, Washington has 468 mine and mineral deposit locations documented in federal records from the USGS and MSHA. 91 of these are currently active mining operations. The most commonly recorded commodity is sand and gravel, construction, with 146 sites. The table below lists all recorded mines in the county with links to individual site details.
All Mines in Skagit County
| Mine | Commodity | Type | Status | Source |
|---|---|---|---|---|
| Beaver Lake Quarry | Crushed, Broken Granite | Surface | Active | MSHA |
| Belleville | Construction Sand and Gravel | Surface | Active | MSHA |
| Birdsview Pit | Sand, Common | Surface | Active | MSHA |
| Elwha Gravel Pit | Construction Sand and Gravel | Surface | Active | MSHA |
| Hamilton | Crushed, Broken Sandstone | Surface | Active | MSHA |
| Hamilton Pit | Construction Sand and Gravel | Surface | Active | MSHA |
| Pacific Quarry | Crushed, Broken Stone NEC | Surface | Active | MSHA |
| A. J. I. Corporation | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Aimcor Olivine | Stone, Crushed/Broken | Surface | Producer | MRDS |
| Alger Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Allied Aggregates & Asphalt Paving | Sand and Gravel, Construction | Surface-Underground | Producer | MRDS |
| Alvard | Talc-Soapstone | Surface | Producer | MRDS |
| Associated Sand & Gravel Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Beacon Point | Magnesite | Surface | Producer | MRDS |
| Cascade Pit and Plant | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Christofferson Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| City of Mt. Vernon | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Commercial Excavating Co., Inc | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Concrete | Limestone, General | Surface | Producer | MRDS |
| Concrete Nor West, Inc. | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Concrete Nor'West Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| D.n.r. Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Dads Girl Claim | Talc-Soapstone | Surface | Producer | MRDS |
| Dept. Of. Highways | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Dept. of Highways | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Dept. of Highways | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Dept. of Highways | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Dept. of Highways | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Dept. of Hwys | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Dukes Hill Quarry | Stone, Crushed/Broken | Surface | Producer | MRDS |
| Dukes Hill Quarry | Stone, Dimension | Surface | Producer | MRDS |
| Eagle Bluff Pit and Portable Mill | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Earl R. Curry | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Ellestad, Virgil | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Forest Sales Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Franek Quarry | Stone, Dimension | Surface | Producer | MRDS |
| Frank Janicki | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Geep Pit | Stone, Crushed/Broken | Surface | Producer | MRDS |
| Georgia- Pacific Corp. | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Georgia-Pacific Corp. | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Hamilton Mill | Magnesite | Processing Plant | Producer | MRDS |
| Hamilton Mill | Magnesite | Surface-Underground | Producer | MRDS |
| Jim Hoy Co. | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Knudson, Harold, Jr. | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Lang S&g | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Last Chance Pit No. 1 | Stone, Crushed/Broken | Surface | Producer | MRDS |
| Londonderry | Talc-Soapstone | Surface | Producer | MRDS |
| Lone Star Cement Corp. | Limestone, General | Processing Plant | Producer | MRDS |
| Mc-Myrl - Wilson | Talc-Soapstone | Surface | Producer | MRDS |
| Mount Vernon Asphalt, Inc. | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Nordlund Quarry & Mill | Stone, Crushed/Broken | Surface | Producer | MRDS |
| North Big Deer Pit | Stone, Crushed/Broken | Surface | Producer | MRDS |
| Northwest-International Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Olivine Hill | Magnesite | Surface | Producer | MRDS |
| Osberg Const. Co. | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Pacific Dump Truck Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Pacific Quarries | Stone, Dimension | Surface | Producer | MRDS |
| Pacific Quarries | Stone, Dimension | Surface | Producer | MRDS |
| R.e. Peterson Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Reef Point | Magnesite | Surface | Producer | MRDS |
| Rods Trucking Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Samish Pit & Mill | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Samish Pit & Mill | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Samish Pit and Plant | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Scheel Doris # 3 | Silica | Surface | Producer | MRDS |
| Scheel Quarry | Magnesite | Surface | Producer | MRDS |
| Skagit County | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Skagit County Rd. Dept | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Skagit County Rd. Dept | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Skagit County Rd. Dept. | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Skagit County Rd. Dept. | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Skagit County Rd. Dept. | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Skagit County Rd. Dept. | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Skagit County Road Dept | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Skagit Talc Products | Talc-Soapstone | Surface | Producer | MRDS |
| Skamania County Quarry | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Strawberry Bay | Magnesite | Surface | Producer | MRDS |
| Upper Samish Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Valley Ready Mix Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Van De Grift Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Vista Bella Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Vogel Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Wesco Concrete Co., Inc. | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Whatcom Skagit Quarries | Stone, Crushed/Broken | Surface | Producer | MRDS |
| Whatcom and Skagit Quarry | Stone, Dimension | Producer | MRDS | |
| Whatcom-Skagit Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Wilder Const. Co., Inc. | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Wilder Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Wilder Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Wilson L. Shaw Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Wind River | Gemstone | Surface | Producer | MRDS |
| Alger | Clay | Surface | Unknown | MRDS |
| Alger | Talc-Soapstone | Occurrence | MRDS | |
| Allan Island | Stone | Occurrence | MRDS | |
| Alta | Lead | Underground | Unknown | MRDS |
| Alta Claim | Zinc, Silver, Lead | Occurrence | MRDS | |
| Aluard | Nickel | Occurrence | MRDS | |
| Alvard | Nickel | Surface | Past Producer | MRDS |
| Alverson | Nickel | Occurrence | MRDS | |
| Alverson Deposit | Strontium | Occurrence | MRDS | |
| Anacopper | Silver, Gold, Copper | Occurrence | MRDS | |
| Anacortes | Chromium | Occurrence | MRDS | |
| Anacortes Copper Prospect | Copper | Prospect | MRDS | |
| Anacortes Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Anacortes Quarry and Mill | Stone, Crushed/Broken | Surface | Past Producer | MRDS |
| Associated Sand & Gravel Co., Inc. | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Butler Pit | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Bacon Creek | Stone, Crushed/Broken | Surface-Underground | Prospect | MRDS |
| Bald Mountain Mine | Gold, Copper | Occurrence | MRDS | |
| Bald Mountain Quarry | Copper | Surface | Past Producer | MRDS |
| Bar Sand and Gravel, Inc. | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Bar Sand and Gravel, Inc. | Stone, Dimension | Surface | Unknown | MRDS |
| Bar Sand and Gravel, Inc. | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Beaver Lake Quarry | Crushed, Broken Sandstone | Surface | Abandoned | MSHA |
| Belleville | Surface | Prospect | MRDS | |
| Belleville | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Belleville Property | Manganese | Occurrence | MRDS | |
| Bellingham Claims | Chromium | Occurrence | MRDS | |
| Bellingham Group | Surface | Occurrence | MRDS | |
| Big Lake | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Big Lake | Graphite | Occurrence | MRDS | |
| Big Lake Pit | Sand, Common | Surface | Intermittent | MSHA |
| Big Rock Pit | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Bingham | Nickel | Occurrence | MRDS | |
| Blackmore Transfer Co | Sand and Gravel, Construction | Underground | Unknown | MRDS |
| Borrow Pit | Sand and Gravel, Construction | Underground | Unknown | MRDS |
| Boston | Lead | Underground | Past Producer | MRDS |
| Boston Claims | Zinc, Silver, Lead | Past Producer | MRDS | |
| Bridge Creek | Talc-Soapstone | Surface-Underground | Unknown | MRDS |
| Broderick | Limestone, Dimension | Surface | Unknown | MRDS |
| Buckindy | Copper | Occurrence | MRDS | |
| Burlington | Asbestos | Surface | Past Producer | MRDS |
| Burlington | Stone | Occurrence | MRDS | |
| Burlington | Palladium | Surface | Unknown | MRDS |
| Burlington Northern Inc | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Burns | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Burrows Island | Stone | Occurrence | MRDS | |
| Callahan | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Cascade | Lead | Past Producer | MRDS | |
| Cascade Claims | Silver, Lead | Occurrence | MRDS | |
| Cascade International Talc | Talc-Soapstone | Occurrence | MRDS | |
| Cascade Talc Pit | Talc-Soapstone | Surface | Past Producer | MRDS |
| Casey's Quarry | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Cavanaugh Lake | Nickel | Occurrence | MRDS | |
| Cavanaugh Lake | Nickel | Occurrence | MRDS | |
| Cerrico Claim | Zinc, Lead | Occurrence | MRDS | |
| Challenger Pit | Sand, Common | Surface | Abandoned | MSHA |
| Chicago | Lead | Occurrence | MRDS | |
| Chicago Claims | Silver, Zinc, Lead | Occurrence | MRDS | |
| City of Anacortes | Stone, Crushed/Broken | Surface | Past Producer | MRDS |
| Clear Lake | Nickel | Occurrence | MRDS | |
| Clear Lake Mill | Talc-Soapstone | Processing Plant | Past Producer | MRDS |
| Clendenen Point Iron Deposit | Iron | Occurrence | MRDS | |
| Cliff | Zinc | Prospect | MRDS | |
| Cliff Claim | Zinc, Copper | Occurrence | MRDS | |
| Concrete | Stone, Crushed/Broken | Surface-Underground | Unknown | MRDS |
| Conway | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Conway Pit | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Cornelius Magnesite,nickel-Gold Dep | Magnesite | Surface | Prospect | MRDS |
| Crescent | Limestone, Dimension | Surface | Unknown | MRDS |
| Cultus Mountain | Nickel | Occurrence | MRDS | |
| Cultus Mountain | Nickel | Occurrence | MRDS | |
| Cultus Mountain | Nickel | Occurrence | MRDS | |
| Cunningham Crushing, Inc | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Curry-Eerks-Johnson | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Cutthroat | Cobalt | Occurrence | MRDS | |
| Cypress Lake | Surface-Underground | Past Producer | MRDS | |
| Cyprus Lake | Chromium | Occurrence | MRDS | |
| Damnation Creek | Limestone, Dimension | Occurrence | MRDS | |
| Davis | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Day Creek Pit | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Day Creek Roadcut Exposure | Nickel | Occurrence | MRDS | |
| Deane Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Dept. of Highways | Sand and Gravel, Construction | Surface-Underground | Unknown | MRDS |
| Dept. of Highways | Stone, Crushed/Broken | Surface | Unknown | MRDS |
| Dept. of Highways | Stone, Crushed/Broken | Surface | Past Producer | MRDS |
| Diamond Mine | Silver | Prospect | MRDS | |
| Diobsud | Nickel | Surface-Underground | Unknown | MRDS |
| Dnr Pit | Sand and Gravel, Construction | Unknown | MRDS | |
| Doris | Stone, Crushed/Broken | Surface-Underground | Past Producer | MRDS |
| Dot Island | Stone | Occurrence | MRDS | |
| Dukes Hill Quarry | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Dunlap Towing Co | Stone, Crushed/Broken | Surface | Past Producer | MRDS |
| E. L. Miller | Sand and Gravel, Construction | Surface-Underground | Unknown | MRDS |
| Eagle | Prospect | MRDS | ||
| Eldorado | Lead, Silver | Occurrence | MRDS | |
| Eldorado | Gold | Underground | Unknown | MRDS |
| Ella Bea and Flaim | Copper | Occurrence | MRDS | |
| Ella Bea and Flaim Claims | Copper | Occurrence | MRDS | |
| Elsie | Copper | Prospect | MRDS | |
| Elsie Claim | Copper | Occurrence | MRDS | |
| Epoch | Iron | Prospect | MRDS | |
| Epoch Claim | Silver, Lead | Occurrence | MRDS | |
| Ernest Miller Prospect | Chromium | Occurrence | MRDS | |
| Federal Highway Administration | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Fidalgo Head | Stone | Occurrence | MRDS | |
| Fidalgo Island | Silver, Gold, Copper | Occurrence | MRDS | |
| Fidalgo Island | Copper | Prospect | MRDS | |
| Fourth of July | Gold, Silver | Occurrence | MRDS | |
| Fourth of July | Silver | Underground | Unknown | MRDS |
| Fred Wenrich | Stone | Surface | Past Producer | MRDS |
| Friday Creek | Clay | Surface | Unknown | MRDS |
| Friend | Lead, Silver | Occurrence | MRDS | |
| Friend | Silver | Occurrence | MRDS | |
| George Scott | Nickel | Occurrence | MRDS | |
| George Scott Claim | Nickel | Occurrence | MRDS | |
| Getchell-Dehuff Property | Limestone, General | Surface | Prospect | MRDS |
| Goat Mtn | Limestone, Dimension | Surface | Unknown | MRDS |
| Gold Run | Gold | Occurrence | MRDS | |
| Gold Run | Gold | Prospect | MRDS | |
| Gorton Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Grand Republic | Lead, Silver, Gold | Occurrence | MRDS | |
| Grand Republic | Lead | Occurrence | MRDS | |
| Grandy Pit | Stone, Crushed/Broken | Surface | Past Producer | MRDS |
| Granite | Silver | Occurrence | MRDS | |
| Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Gravel Pit | Sand and Gravel, Construction | Unknown | MRDS | |
| Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Gravel Pits | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Great Northern Claims | Zinc, Silver, Gold | Occurrence | MRDS | |
| Hamilton | Iron, Manganese | Occurrence | MRDS | |
| Hamilton | Surface | Past Producer | MRDS | |
| Hamilton Claims | Iron | Past Producer | MRDS | |
| Hamilton Iron Deposit | Iron | Underground | Prospect | MRDS |
| Hamilton Mill | Olivine | Surface | Abandoned | MSHA |
| Hammond, Robert A. | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Hartford | Lead | Underground | Past Producer | MRDS |
| Hartford Claim | Lead, Silver | Occurrence | MRDS | |
| Hat Island | Stone | Occurrence | MRDS | |
| Hoage Lake Area | Limestone, General | Surface | Prospect | MRDS |
| Hornbeck | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Ianicki Quarry | Stone, Crushed/Broken | Surface | Past Producer | MRDS |
| Iowa-Olympia Claims | Lead, Silver | Occurrence | MRDS | |
| Island Frontier Landscape Const.co. | Stone, Crushed/Broken | Surface-Underground | Unknown | MRDS |
| Island Mine | Copper | Occurrence | MRDS | |
| J I Mayer | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| J. L. Tennyson Gravel | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Jackman Creek | Limestone, Dimension | Occurrence | MRDS | |
| Jackman Creek | Limestone, Dimension | Occurrence | MRDS | |
| James Stevens | Gemstone | Occurrence | MRDS | |
| John A. Stevens | Stone, Crushed/Broken | Surface | Unknown | MRDS |
| Johnsburg | Zinc, Silver, Copper, Gold, Lead | Occurrence | MRDS | |
| Johnsburg | Underground | Past Producer | MRDS | |
| Johnsburg | Kyanite | Surface | Occurrence | MRDS |
| Johnsburg Claims | Lead, Silver | Past Producer | MRDS | |
| Jones Creek | Graphite | Occurrence | MRDS | |
| Jordan Creek | Nickel | Occurrence | MRDS | |
| Jordan Creek | Nickel | Occurrence | MRDS | |
| Katie | Manganese | Prospect | MRDS | |
| Kildare | Lead | Underground | Unknown | MRDS |
| Kildare Claim | Zinc, Silver, Lead | Occurrence | MRDS | |
| La Conner | Nickel | Prospect | MRDS | |
| La Plant | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Lak McMurray | Flagstone | Occurrence | MRDS | |
| Lakeside Claims | Gold, Zinc, Silver, Lead | Occurrence | MRDS | |
| Last Chance | Chromium | Surface | Past Producer | MRDS |
| Last Chance Claim | Chromium | Past Producer | MRDS | |
| Last Chance Mine | Garnet | Occurrence | MRDS | |
| Lawrence | Copper | Prospect | MRDS | |
| Lawrence Claims | Copper | Occurrence | MRDS | |
| Leader | Chromium | Surface | Prospect | MRDS |
| Leader Claim | Chromium | Occurrence | MRDS | |
| Logan | Lead | Underground | Prospect | MRDS |
| Logan No 2 | Silver | Prospect | MRDS | |
| Logan No. 2 | Lead, Silver | Occurrence | MRDS | |
| Lyman | Asbestos | Surface | Past Producer | MRDS |
| Lyman | Talc-Soapstone | Occurrence | MRDS | |
| Mine 1 | Dimension Basalt | Surface | Abandoned | MSHA |
| Marble Creek | Limestone, Dimension | Occurrence | MRDS | |
| Marblemount Area | Talc-Soapstone | Occurrence | MRDS | |
| Marine Asphalt Co.inc. | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Matrix Property | Gold, Copper | Occurrence | MRDS | |
| Mayer City Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| McMaster Claims | Chromium | Occurrence | MRDS | |
| McMaster and Alma Claims | Surface | Occurrence | MRDS | |
| McMyrl-Wilson | Nickel | Occurrence | MRDS | |
| Meadow | Chromium | Surface | Prospect | MRDS |
| Meadow Claim | Chromium | Occurrence | MRDS | |
| Michigan | Silver, Lead | Occurrence | MRDS | |
| Michigan | Silver | Occurrence | MRDS | |
| Midas | Silver | Prospect | MRDS | |
| Midas Claims | Silver, Copper, Gold, Zinc, Lead | Occurrence | MRDS | |
| Mine 1 | Iron Ore | Surface | Abandoned | MSHA |
| Mineral Park | Quartz | Occurrence | MRDS | |
| Mount Eldorado | Mercury | Occurrence | MRDS | |
| Mount Vernon | Nickel, Gold | Occurrence | MRDS | |
| Mount Vernon | Chromium, Nickel, Gold | Occurrence | MRDS | |
| Mount Vernon | Nickel | Surface | Occurrence | MRDS |
| Mount Vernon | Stone, Crushed/Broken | Occurrence | MRDS | |
| Mount Vernon Deposit | Nickel, Gold | Surface | Prospect | MRDS |
| Mountain Home | Manganese | Occurrence | MRDS | |
| Mountain Home Claim | Copper, Manganese | Occurrence | MRDS | |
| Mt. Josephine | Nickel | Unknown | MRDS | |
| Nellie Kelly | Chromium | Occurrence | MRDS | |
| Nellie Kelly Claim | Chromium | Occurrence | MRDS | |
| Nielsen Brothers Inc | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Nookachamp Creek | Diatomite | Occurrence | MRDS | |
| Nookachamps Creek | Nickel, Arsenic | Occurrence | MRDS | |
| Nookachamps Creek | Nickel | Occurrence | MRDS | |
| Nookachamps Creek | Arsenic | Occurrence | MRDS | |
| Nookachamps Creek | Arsenic | Occurrence | MRDS | |
| Nooksack Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Nordlund Pit and Plant | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| North Coast | Gold | Underground | Unknown | MRDS |
| North Coast Mine | Copper, Silver, Gold | Occurrence | MRDS | |
| Northwest Talc & Magnesium Co | Stone, Crushed/Broken | Surface-Underground | Unknown | MRDS |
| Northwest Talc and Magnesium Co. | Stone, Crushed/Broken | Surface-Underground | Unknown | MRDS |
| Old Gray Mare | Zinc | Underground | Unknown | MRDS |
| Olivine Corp. | Magnesite | Surface-Underground | Unknown | MRDS |
| Olivine Hill | Chromium | Occurrence | MRDS | |
| Ontario | Lead | Occurrence | MRDS | |
| Ontario Claim | Gold, Silver, Lead | Occurrence | MRDS | |
| Oso | Stone | Occurrence | MRDS | |
| Pay Streak | Limestone, Dimension | Surface | Unknown | MRDS |
| Pioneer | Silver | Prospect | MRDS | |
| Pioneer Claims | Silver | Occurrence | MRDS | |
| Pittsburg | Prospect | MRDS | ||
| Portable Crush Plant | Sand, Common | Surface | Intermittent | MSHA |
| Portland | Limestone, Dimension | Surface | Unknown | MRDS |
| Powell Creek | Nickel | Occurrence | MRDS | |
| Powell Creek | Nickel | Occurrence | MRDS | |
| Prairie | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Prairie | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Pressentin | Stone, Crushed/Broken | Surface-Underground | Unknown | MRDS |
| Protection | Copper, Zinc, Lead | Occurrence | MRDS | |
| Protection | Lead | Prospect | MRDS | |
| Quarry | Stone | Surface | Unknown | MRDS |
| Quarry | Stone | Surface | Unknown | MRDS |
| Queen and Buchanan | Lead, Copper | Occurrence | MRDS | |
| Queen and Buchanan | Copper | Underground | Unknown | MRDS |
| Rainbow Claim | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Ready Cash | Chromium | Occurrence | MRDS | |
| Ready Cash | Surface | Past Producer | MRDS | |
| Ready Cash Claim | Chromium | Past Producer | MRDS | |
| Riverside Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Rockport | Calcium | Occurrence | MRDS | |
| Rockport | Limestone, Dimension | Surface | Unknown | MRDS |
| Rockport Pit | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Rockport Quarry Llc | Crushed, Broken Basalt | Surface | Abandoned | MSHA |
| Rogers | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Rouse | Lead | Underground | Prospect | MRDS |
| Saddlebag Island | Stone | Occurrence | MRDS | |
| Sadie Cudworth | Talc-Soapstone | Surface | Past Producer | MRDS |
| Samish Bay | Manganese | Occurrence | MRDS | |
| Samish Bay | Manganese | Occurrence | MRDS | |
| Samish Pit | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Sand and Gravel | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sauk | Limestone, Dimension | Occurrence | MRDS | |
| Sawmill | Palladium | Surface | Unknown | MRDS |
| Scott | Asbestos | Occurrence | MRDS | |
| Scott | Nickel | Occurrence | MRDS | |
| Sedro Woolley | Stone, Crushed/Broken | Surface | Unknown | MRDS |
| Sierra Grande | Lead | Occurrence | MRDS | |
| Sierra Grande Claim | Gold, Silver, Lead | Occurrence | MRDS | |
| Silica Camp | Stone, Crushed/Broken | Surface-Underground | Past Producer | MRDS |
| Silica Claim | Silica | Surface | Occurrence | MRDS |
| Silver Queen | Copper, Zinc, Silver, Lead | Occurrence | MRDS | |
| Silver Queen | Copper | Surface-Underground | Unknown | MRDS |
| Silver Tip | Lead | Surface-Underground | Prospect | MRDS |
| Silver Tip Claims | Gold, Zinc, Silver, Lead | Occurrence | MRDS | |
| Skagit County Road Department | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Skagit Copperr | Copper | Prospect | MRDS | |
| Skagit Queen | Silver | Prospect | MRDS | |
| Skagit Queen Claims | Lead, Silver | Occurrence | MRDS | |
| Skagit River | Graphite | Occurrence | MRDS | |
| Skagit River | Pumice | Prospect | MRDS | |
| Skagit River | Graphite | Surface | Prospect | MRDS |
| Skagit River Bar & Partable Plant | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Skoal Talc Mine | Talc-Soapstone | Underground | Prospect | MRDS |
| Sluss | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Smith | Chromium | Prospect | MRDS | |
| Smith Claim | Chromium | Occurrence | MRDS | |
| Smith Open Cut | Chromium | Occurrence | MRDS | |
| Smith Open Cut | Chromium | Prospect | MRDS | |
| Soldier Boy | Gold | Prospect | MRDS | |
| Soldier Boy Claim | Copper, Zinc, Gold | Occurrence | MRDS | |
| Stenmo | Silver, Lead, Zinc | Occurrence | MRDS | |
| Stenmo | Lead | Surface-Underground | Unknown | MRDS |
| Stephens | Copper, Gold, Silver | Occurrence | MRDS | |
| Stephens | Copper, Gold, Silver | Past Producer | MRDS | |
| Stephens | Nickel | Occurrence | MRDS | |
| Stephens | Nickel | Occurrence | MRDS | |
| Stephens | Copper | Underground | Past Producer | MRDS |
| Stoner | Stone, Crushed/Broken | Surface-Underground | Past Producer | MRDS |
| Suiattle River | Graphite | Occurrence | MRDS | |
| Summit Timber Co | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Sutter Creek | Limestone, Dimension | Surface | Unknown | MRDS |
| Sutter Mt | Limestone, Dimension | Surface | Unknown | MRDS |
| Sweden | Copper | Underground | Past Producer | MRDS |
| Swinomish Bay | Magnesite | Surface | Occurrence | MRDS |
| Telstar Claims | Silver | Prospect | MRDS | |
| Tennyson Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| The Sanwick Corp. | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Thornwood | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Three Lakes | Surface | Prospect | MRDS | |
| Three Lakes Group | Chromium | Occurrence | MRDS | |
| Three Lakes North | Chromium | Prospect | MRDS | |
| Three Lakes South | Chromium | Surface | Prospect | MRDS |
| Three Mile Creek | Limestone, Dimension | Surface | Unknown | MRDS |
| Thunder Creek | Gold, Copper, Zinc, Silver, Lead | Occurrence | MRDS | |
| Thunder Creek | Zinc | Underground | Prospect | MRDS |
| Thunder Mountain Claims | Gold, Copper, Zinc, Lead, Silver | Occurrence | MRDS | |
| Tilon | Clay | Surface | Past Producer | MRDS |
| Twin Sister Magnesium & Chrome Corp | Chromium | Occurrence | MRDS | |
| Twin Sisters Mtns | Chromium | Occurrence | MRDS | |
| Twin Sisters Pit and Mill | Stone, Crushed/Broken | Surface | Past Producer | MRDS |
| Twins Group | Surface | Occurrence | MRDS | |
| Twins Group | Surface | Occurrence | MRDS | |
| United Campground, Inc | Sand and Gravel, Construction | Unknown | MRDS | |
| Unknown Mine | Calcium | Unknown | MRDS | |
| Unknown Mine | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Unnamed Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Sand and Gravel | Sand and Gravel, Construction | Surface-Underground | Unknown | MRDS |
| Utopia | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Ventura | Gold, Lead, Silver | Occurrence | MRDS | |
| Ventura | Silver | Prospect | MRDS | |
| Walker Valley | Nickel | Occurrence | MRDS | |
| Walker Valley | Nickel | Occurrence | MRDS | |
| Wash Marble & Building Stone | Stone | Unknown | MRDS | |
| Washington | Molybdenum | Occurrence | MRDS | |
| Washington Crushers Inc. | Stone, Crushed/Broken | Surface-Underground | Unknown | MRDS |
| Washington Gem Jade Co. | Gemstone | Surface-Underground | Unknown | MRDS |
| Washington Monument Deposit | Limestone, General | Surface | Occurrence | MRDS |
| Webber | Limestone, Dimension | Surface | Unknown | MRDS |
| West Seattle | Lead | Underground | Past Producer | MRDS |
| West Seattle Claim | Zinc, Silver, Lead | Occurrence | MRDS | |
| White | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Whitmarsh | Sand and Gravel, Construction | Surface | Unknown | MRDS |
| Willis and Everett | Gold, Silver, Lead | Occurrence | MRDS | |
| Willis and Everett | Silver | Underground | Past Producer | MRDS |
| Willis and Everett Claims | Silver | Past Producer | MRDS |