| Date of Incident | 
Mine Name | 
Operating Company | 
Determination | 
Report | 
|  January 22, 2013 | 
 Delaware Sand Plant | 
 Anchor Stone Company | 
 Natural Causes | 
  | 
 
|  February 19, 2013 | 
 Crusher #1 | 
 Intermountain Concrete Co. | 
 Natural Causes | 
  | 
 
  
  Incidents Occurring in 2011 but Determined in 2013
 
| Date of Incident | 
Mine Name | 
Operating Company | 
Determination | 
Report | 
 
|  January 21, 2011 | 
 Little Rock Site | 
 Quality Rock Products | 
 Natural Causes | 
  | 
|  September 22, 2011 | 
 Empire Quarry | 
 Indiana Limestone Company, Inc. | 
 Natural Causes | 
  | 
  
|  November 6, 2011 | 
 Rochester Mine | 
 Coeur Rochester, Inc. | 
 Natural Causes | 
  | 
  Incidents Occurring in 2012 but Determined in 2013
 
| Date of Incident | 
Mine Name | 
Operating Company | 
Determination | 
Report | 
  
  
|  February 20, 2012 | 
 Mt. Pass Mine & Mill | 
 MolyCorp Minerals | 
 Natural Causes | 
  | 
  
|  February 24, 2012 | 
 Alby Quarry | 
 GP Material, Inc. | 
 Trespassing | 
  | 
 
|  May 25, 2012 | 
 Wilson County Quarry | 
 Vulcan Construction Materials, L.P. | 
 Natural Causes | 
  | 
|  June 27, 2012 | 
 Bristol Sand and Gravel | 
 Hanson Aggregates, LLC | 
 Natural Causes | 
  | 
 
|  August 11, 2012 | 
 Racine Quarry | 
 Vulcan Construction Materials, L.P. | 
 Suicide | 
  | 
|  August 15, 2012 | 
 S & L Materials, Inc. | 
 S & L Materials, Inc. | 
 Natural Causes | 
  | 
|  August 29, 2012 | 
 Thornton Quarry | 
 Hanson Material Service | 
 Trespassing | 
  | 
|  September 1, 2012 | 
 National Cement Company | 
 National Cement Company of Alabama, Inc. | 
 Trespassing | 
  | 
|  September 9, 2012 | 
 Unimin Corp | 
 Unimin Corp | 
 Natural Causes | 
  | 
|  October 2, 2012 | 
 Rock Plant | 
 P W Gillibrand Company | 
 Trespassing | 
  | 
|  October 3, 2012 | 
 Avery Pit | 
 Pacific Northwest Aggregates, Inc. | 
 Natural Causes | 
  | 
|  October 4, 2012 | 
 E.I.A. Sand and Gravel 2 | 
 E.I.A., LLC | 
 Natural Causes | 
  | 
|  October 5, 2012 | 
 Linwood Lime Plant | 
 Linwood Mining and Minerals Corporation | 
 Suicide | 
  | 
|  October 16, 2012 | 
 Puddledock Sand & Gravel | 
 Vulcan Construction Materials, L.P. | 
 Natural Causes | 
  | 
|  October 25, 2012 | 
 Staunton Lime Company | 
 Staunton Lime Company | 
 Natural Causes | 
  | 
|  October 27, 2012 | 
 Emigrant Mine | 
 Newmont USA, Ltd. | 
 Natural Causes | 
  | 
|  October 30, 2012 | 
 New Britain Quarry | 
 Tilcon Connecticut, Inc. | 
 Suicide | 
  | 
|  November 6, 2012 | 
 Plant 1 | 
 Southern Aggregates LLC Delaware | 
 Natural Causes | 
  | 
|  November 17, 2012 | 
 Flemingsburg Quarry | 
 Hanson Aggregates Midwest, LLC. | 
 Trespassing | 
  | 
|  November 18, 2012 | 
 Raleigh Quarry | 
 Hanson Aggregates Southeast, LLC. | 
 Trespassing | 
  | 
|  November 30, 2012 | 
 South Fort Meade Mine | 
 Mosaic Fertilizer, LLC. | 
 Natural Causes | 
  | 
|  December 21, 2012 | 
 Barin Quarry | 
 Vulcan Construction Materials, L.P. | 
 Natural Causes | 
  |