Rep. George Miller released the list of the 48 most dangerous mines in America. These are the mines that have the most outstanding health and safety violations contested by the mine owners.

Had the mines not contested these penalties, they likely would receive “pattern of violation” notices that would accelerate the Mine Safety and Health Administration’s ability to close the mines. But because they’re able to keep these violations open and unresolved for years on end, the mines continue to operate with potentially unsafe conditions.

We reassembled the data released by Miller’s committee into easy, sortable tables. The tables below tell you what mines, where, and who owns them, as well as what percentage of violations the owner contests at each site. The data is broken out into two sets: coal mines, and metal/non-metal mines excluding coal.

Click on the top row to sort by that column; click the column again to reverse the order.

Coal Mines

Mine Name Location State Operator Name Controller Operator Contest Rate 2009 Mine Employment
Elkville No. 1 Mine Jackson County IL S Coal Company Geraldine P Turner 72.53% 44
Deep Mine No. 8 Wayne County WV Argus Energy WV, LLC James H Booth 67.09% 69
Copley Trace Surface Mine Wayne County WV Argus Energy WV, LLC James H Booth 67.09% 97
Allegiance Mine Boone County WV Independence Coal Company Inc Massey Energy Company 55.54% 209
Liberty Processing Boone County WV Independence Coal Company Inc Massey Energy Company 55.54% 66
American Eagle Mine Kanawha County WV Speed Mining LLC Patriot Coal Corporation 53.59% 215
Highland 9 Mine Union County KY Highland Mining Company, Inc. Patriot Coal Corporation 51.34% 416
Coalburg No. 1 Mine Boone County WV Mountain Edge Mining, Inc. Douglas M Epling 45.34% 74
Dorothy No 3 Mine Boone County WV Mountain Edge Mining, Inc. Douglas M Epling 45.34% 63
Roundbottom Powellton Deep Mine Boone County WV Elk Run Coal Company, Inc. Massey Energy Company 43.14% 104
Slip Ridge Cedar Grove Mine Raleigh County WV Markfork Coal Company, Inc. Massey Energy Company 42.40% 57
Broad Run Mine Mason County WV Big River Mining LLC Coalfield Transport Inc 37.68% 102
Mine #1 Pike County KY Clean Energy Mining Company Massey Energy Company 36.96% 100
Toney Fork Surface Mine Logan Country WV INR-WV Operating LLC INR-I Holdings LLC 36.96% 124
Upper Big Branch Mine South Raleigh County WV Performance Coal Company Massey Energy Company 36.17% 189
Mine #28 Pike County KY CAM Mining LLC Wexford Capital LLC 35.92% 116
Winchester Mine Kanawha County WV Remington LLC Patriot Coal Corporation 32.32% 66
Tipple #1 Wise County VA Hills Coal Co., Inc. Horace G Hill 30.43% 6
Mine No. 35 Mcdowell County WV XMV, Inc. ArcelorMittal 30.06% 30
Mine No. 37 Mcdowell County WV XMV, Inc. ArcelorMittal 30.06% 35
Mine No. 36 Mcdowell County WV XMV, Inc. ArcelorMittal 30.06% 35
Big Mountain No 16 Boone County WV Pine Ridge Coal Company LLC Patriot Coal Corporation 29.32% 189
Horizon Mine Carbon County UT Hidden Splendor Resources, Inc. Alexander H Walker III 28.37% 90
Josephine No 2 Mine Raleigh County WV Pocahontas Coal Company LLC Metinvest B V 26.60% 69
Mine #2 Knott County KY Viper Coal LLC Jody D Puckett 22.84% 19
Kemmerer Mine Lincoln County WY The Pittsburg & Midway Coal Mining Co. Chevron Corporation 22.51% 302
Beckley Pocahontas Mine Raleigh County WV ICG Beckley LLC International Coal Group Inc (ICG) 19.63% 204
Pond Creek Mine No. 1 Mingo County WV KWV Operations LLC Robert Helton 18.25% 22
Garland Mine Bourbon County KS Phoenix Mining Company Robert I Hartley; James Brakefield 17.39% 31
Coalburg No 2 Mine Logan County WV Rio Group, Inc. Richard H Abraham 0.00% 35
Kayenta Mine Navajo County AZ Peabody Western Coal Company Peabody Energy 0.00% 425
Midland Trail Mine No. 2 Greenbrier County WV Midland Trail Mining LLC #N/A #N/A 59

Metal/Non-Metal Mines

Mine Name Location State Operator Name Controller Operator Contest Rate 2009 Mine Employment
Sreebs Slate & Stone Co. Inc. Northampton County PA Williams & Sons Slate & Tile Inc Anthony J. Williams; Robert D Williams 100.00% 28
Giant Cement Company Dorchester County SC Giant Cement Holding Company Cementos Portland Valderrivas S A 95.04% 285
Selma Plant Quarry & Mill Jefferson County MO Buzzi Unicem USA Buzzi Univem S P A 83.55% 157
Saint-Gobain Proppants Sebastian County AR Saint-Gobain Proppants St Gobain 82.69% 136
Bear River Zeolite Franklin County ID Bear River Zeolite Co John C Lawrence 81.48% 18
Meikle Mine Eureka County NV Barrick Goldstrike Mines Inc Barrick Gold COrp 78.98% 577
Essroc Cement Corp – Bessemer PA Lawrence County PA Essroc Cement COrp Italcementi Spa 59.14% 78
Lebec Cement Plant Kern County CA National Cement Company of California Inc Vicat S A 50.77% 117
Harleyville MIne & Plant Dorchester County SC Lafarge Building Materials Incorporated Lafarge S A 50.00% 116
Deep Post Eureka County NV Newmont USA Limited Newmont Mining Corp 42.91% 194
Sherwin Alumina, L.P. San Patricio County TX Sherwin Alumnia Company Glencore International A G 38.22% 482
Holcim (US) Inc Greene County NY Holcim (US) Inc Holcim Ltd 29.95% 126
Genesis Inc. Troy Mine Lincoln County MT Genesis Inc. Revett Silver Company 28.47% 180
Leeds Plant Jefferson County AL Lehigh Cement Company Heidelberg Cement AG 24.47% 129
Seattle Plant King County WA Lafarge North America Inc Lafarge S A 21.09% 75
Miami Cement Plant Dade County FL Rinker Materials of Florida Inc. Cemex S A 0.00% 102