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Mines in Ada County, Idaho

Ada County, Idaho has 107 mines on MSHA's register: 11 active, 12 intermittent, 83 abandoned. 165 accidents have been reported at these mines between 1985 and 2026. Inspectors have issued 2,112 citations.

Every mine MSHA has registered in Ada County, working or not, with the accident, fatality and citation record each one carries on this site. Active mines are listed first, then the rest by the weight of their record.

Abandoned and historical mine features in Ada County →

Mines on register
107
Active
11
Fatalities on record
0
Citations issued
2,112
1 underground · 103 surface · 2 facilities 0 coal · 107 metal and non-metal 12 intermittent 83 abandoned 165 reported accidents, 1985–2026
Local economic context
ⓘ County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Ada County, Idaho · Population 508,052
0.1%
Mining share of county employment
$88,907
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
On the map 
Loading map…
MSHA-registered mine, any status

Mines plot only where MSHA holds a surveyed coordinate for the site; mines the agency locates to a town, county or state centroid are in the counts and the list above but not drawn. Click a point for the mine's status and record.

Operators with the most mines herecurrent operator of record
Operator Mines Active Fatalities
H & B CRUSHING LLC 6 2 0
Idaho Materials and Construction 5 0 0
Ada County Highway District 4 0 0
Boise Sand & Gravel Company 4 0 0
M.R. Miller Inc. 4 0 0
Boise Paving & Asphalt Company 3 0 0
Boise Paving & Asphalt Company 3 0 0
Intermountain Crushing Inc 3 0 0
Knife River Corporation Mountain West 3 1 0
Nelson Construction Company 3 0 0
Mines in Ada County107 on register
  1. Crusher #1
    Surface metal/non-metal · Knife River Corporation Mountain West · MSHA ID 1002089
    Active
  2. Golden Eagle
    Underground metal/non-metal · Greyhound Mine & Milling, Inc. · MSHA ID 1002155
    Active
  3. Rock Force 1
    Surface metal/non-metal · Premier LLC · MSHA ID 1001717
    Active
  4. Caldwell Plant
    Surface metal/non-metal · Carco Mineral Resources Inc · MSHA ID 1001768
    Active
  5. Plant #2
    Surface metal/non-metal · H & B Crushing LLC · MSHA ID 1002255
    Active
  6. Pleasant Valley Pit
    Surface metal/non-metal · Ruschman Sand & Gravel Inc · MSHA ID 1001950
    Active
  7. Badger pit
    Surface metal/non-metal · Suncore Construction and Materials, Inc. · MSHA ID 1002240
    Active
  8. Notus Pit Boise River Road
    Surface metal/non-metal · Suncore Construction and Materials, Inc. · MSHA ID 1002283
    Active
  9. Liberty
    Surface metal/non-metal · Premier LLC · MSHA ID 1002338
    Active
  10. IGT Sand and Gravel
    Surface metal/non-metal · Idaho Grading and Trucking, L.L.C. · MSHA ID 1002278
    Active
  11. Plant #8
    Surface metal/non-metal · H & B CRUSHING LLC · MSHA ID 1002363
    Active
  12. Portable Crusher #1
    Surface metal/non-metal · Western Construction Inc · MSHA ID 1001634
    Intermittent
  13. PORTABLE PLANT #1
    Surface metal/non-metal · Nelson Construction Company · MSHA ID 1001710
    Abandoned
  14. Rocky Mountain Gravel Pit
    Surface metal/non-metal · Rocky Mountain Paving, Inc. · MSHA ID 1001795
    Abandoned
  15. Black Cat Pit
    Surface metal/non-metal · C. Wright Construction Co Inc · MSHA ID 1000365
    Abandoned
  16. Summit Stone Portable
    Surface metal/non-metal · Idaho Materials & Construction · MSHA ID 1002035
    Abandoned
  17. Portable Crusher #2
    Surface metal/non-metal · Western Construction Inc · MSHA ID 1001643
    Intermittent
  18. CR4
    Surface metal/non-metal · Lurre Construction · MSHA ID 1001952
    Intermittent
  19. Mobile impact crusher
    Surface metal/non-metal · Suncore Construction and Materials, Inc. · MSHA ID 1002045
    Intermittent
  20. Prime Earth Inc
    Surface metal/non-metal · Prime Earth Inc · MSHA ID 1001866
    Abandoned
  21. PORTABLE PLANT #2
    Surface metal/non-metal · Nelson Construction Company · MSHA ID 1001944
    Abandoned
  22. Superior Construction-10 mile pit
    Surface metal/non-metal · Superior Construction & Excavating Inc. · MSHA ID 1001977
    Abandoned
  23. TV Plant #001286
    Surface metal/non-metal · Idaho Materials and Construction · MSHA ID 1001994
    Abandoned
  24. PORTABLE PLANT #1
    Surface metal/non-metal · Boise Paving & Asphalt Company · MSHA ID 1001824
    Abandoned
  25. Prime Earth, Inc - Star
    Surface metal/non-metal · Prime Earth, Inc. · MSHA ID 1002076
    Abandoned
  26. Gravel Werks
    Surface metal/non-metal · Gravel Werks · MSHA ID 1001946
    Abandoned
  27. Wash Plant 2
    Surface metal/non-metal · Knife River Corporation Mountain West · MSHA ID 1002090
    Intermittent
  28. Western Construction Portable Plant #3
    Surface metal/non-metal · Western Construction Inc · MSHA ID 1001726
    Abandoned
  29. DALRYMPLE PIT
    Surface metal/non-metal · Boise Valley Gravel Co · MSHA ID 1000763
    Abandoned
  30. Boise Refining Facility
    Facility metal/non-metal · Gold Hill Reclamation and Mining · MSHA ID 1002223
    Abandoned
  31. Federal Way Aggregates
    Surface metal/non-metal · Idaho Materials & Construction · MSHA ID 1000604
    Abandoned
  32. Apple Pit
    Surface metal/non-metal · Boise Paving & Asphalt Company · MSHA ID 1001715
    Abandoned
  33. Table Rock Sandstone
    Surface metal/non-metal · Table Rock Sandstone, LLC · MSHA ID 1001872
    Intermittent
  34. Eagle Pit
    Surface metal/non-metal · Idaho Materials & Construction · MSHA ID 1000740
    Abandoned
  35. Plant #4
    Surface metal/non-metal · H & B Crushing LLC · MSHA ID 1002293
    Intermittent
  36. Wash Plant
    Surface metal/non-metal · Premier, LLC · MSHA ID 1002288
    Abandoned
  37. PORTABLE PLANT #3
    Surface metal/non-metal · Nelson Construction Company · MSHA ID 1001961
    Abandoned
  38. KBR380-2
    Surface metal/non-metal · M.R. Miller Inc. · MSHA ID 1002127
    Abandoned
  39. Plant #3
    Surface metal/non-metal · H & B Crushing LLC · MSHA ID 1002286
    Intermittent
  40. Wash Plant #4
    Surface metal/non-metal · Knife River Corporation Northwest · MSHA ID 1002092
    Abandoned
  41. 54 Plant
    Surface metal/non-metal · Intermountain Crushing Inc · MSHA ID 1001697
    Abandoned
  42. Portable Plant #2
    Surface metal/non-metal · Cloverdale Nursery & Turf Farm · MSHA ID 1002104
    Abandoned
  43. Rental Portable Screen Plant
    Surface metal/non-metal · Idaho Concrete Company · MSHA ID 1001709
    Abandoned
  44. Plant #7
    Surface metal/non-metal · H & B Crushing LLC · MSHA ID 1002346
    Intermittent
  45. PORTABLE CRUSHER #1
    Surface metal/non-metal · Morrison Knudsen Corp An Ohio Corp · MSHA ID 1001956
    Abandoned
  46. 45 Plant
    Surface metal/non-metal · Intermountain Crushing Inc · MSHA ID 1001696
    Abandoned
  47. DIAMOND STREET PIT
    Surface metal/non-metal · Ruschman Sand & Gravel Inc · MSHA ID 1001773
    Abandoned
  48. HARRIS PIT
    Surface metal/non-metal · Turner Sand & Gravel Inc · MSHA ID 1000344
    Abandoned
  49. KBR480-1
    Surface metal/non-metal · M.R. Miller Inc. · MSHA ID 1002126
    Abandoned
  50. Pleasant Valley Pit
    Surface metal/non-metal · Boise Paving & Asphalt Company · MSHA ID 1000892
    Abandoned
  51. Rock Crusher #1
    Surface metal/non-metal · Double G Company · MSHA ID 1001707
    Abandoned
  52. Wash Plant 3
    Surface metal/non-metal · Knife River Corporation Mountain West · MSHA ID 1002161
    Intermittent
  53. Blackscreek Ranch
    Surface metal/non-metal · D & B Crushing LLC · MSHA ID 1002179
    Abandoned
  54. Broken Rock Sand & Gravel
    Surface metal/non-metal · Broken Rock Sand & Gravel LLC · MSHA ID 1002375
    Intermittent
  55. KBR550-3
    Surface metal/non-metal · M.R. Miller Inc. · MSHA ID 1002123
    Abandoned
  56. Plant #6 - Wash Plant
    Surface metal/non-metal · H & B Crushing LLC · MSHA ID 1002319
    Intermittent
  57. Portable 1
    Surface metal/non-metal · M R Miller Inc · MSHA ID 1002015
    Abandoned
  58. Portable Plant #1
    Surface metal/non-metal · Cloverdale Nursery & Turf Farm Inc · MSHA ID 1002009
    Abandoned
  59. Bailey Pit
    Surface metal/non-metal · Iron Horse Excavation, LLC · MSHA ID 1002308
    Abandoned
  60. #2 Pit
    Surface metal/non-metal · Nelson Sand & Gravel Company Inc · MSHA ID 1000600
    Abandoned
  61. 13 Plant
    Surface metal/non-metal · Intermountain Crushing Inc · MSHA ID 1001695
    Abandoned
  62. 55 & Hill Pit
    Surface metal/non-metal · Idaho Sand & Gravel Company Inc · MSHA ID 1001034
    Abandoned
  63. Ada Sand And Gravel Pit
    Surface metal/non-metal · Ada Sand & Gravel Inc · MSHA ID 1000301
    Abandoned
  64. American Paving Company
    Surface metal/non-metal · American Paving Company · MSHA ID 1001437
    Abandoned
  65. Apple Street Pit
    Surface metal/non-metal · Rock Contractors Inc · MSHA ID 1001718
    Abandoned
  66. Apple Street Pit
    Surface metal/non-metal · Central Paving Company Inc · MSHA ID 1001741
    Abandoned
  67. Aspen Pit
    Surface metal/non-metal · Boise Sand & Gravel Company · MSHA ID 1001347
    Abandoned
  68. Black Cat Pit
    Surface metal/non-metal · A Busy Bee Sand & Gravel Inc · MSHA ID 1001406
    Abandoned
  69. BLACK CAT PLANT
    Surface metal/non-metal · Black Cat Construction · MSHA ID 1001931
    Abandoned
  70. Busy B Pit And Plant
    Surface metal/non-metal · Busy B Sand & Gravel Inc · MSHA ID 1000337
    Abandoned
  71. CLAYTON DIASOURCE LLC
    Surface metal/non-metal · Clayton Diasource Llc · MSHA ID 1001969
    Abandoned
  72. Cole Road Pit
    Surface metal/non-metal · Boise Sand & Gravel Company · MSHA ID 1000934
    Abandoned
  73. Crusher #5
    Surface metal/non-metal · Knife River · MSHA ID 1002173
    Abandoned
  74. D & H Construction (Portable Unit)
    Surface metal/non-metal · D & H Construction Company · MSHA ID 1001832
    Abandoned
  75. Eagle Pit
    Surface metal/non-metal · Boise Paving & Asphalt Company · MSHA ID 1000894
    Abandoned
  76. Eagle Pit
    Surface metal/non-metal · Rock Contractors Inc · MSHA ID 1001711
    Abandoned
  77. Galey Pit
    Surface metal/non-metal · Boise Sand & Gravel Company · MSHA ID 1001388
    Abandoned
  78. Gunn Portable Plant
    Surface metal/non-metal · Barry A Gunn Construction Inc · MSHA ID 1001890
    Abandoned
  79. Hendricks Pit
    Surface metal/non-metal · Hendricks Sand & Gravel · MSHA ID 1001385
    Abandoned
  80. Joplin Pit
    Surface metal/non-metal · Clements Concrete Company · MSHA ID 1001722
    Abandoned
  81. Joplin Pit Or Joplin
    Surface metal/non-metal · Ada Sand & Gravel & Construction Company · MSHA ID 1001447
    Abandoned
  82. King Pit
    Surface metal/non-metal · King Development Company Inc · MSHA ID 1001706
    Abandoned
  83. Kuna Pit
    Surface metal/non-metal · Ada County Highway District · MSHA ID 1000890
    Abandoned
  84. Mac Gregor Triangle Pit
    Surface metal/non-metal · Quinn-Robbins Company Inc · MSHA ID 1000864
    Abandoned
  85. Madison Pit
    Surface metal/non-metal · Quinn-Robbins Company Inc · MSHA ID 1000348
    Abandoned
  86. Mc Cartan'S Pit
    Surface metal/non-metal · Mc Cartan'S Sand & Gravel · MSHA ID 1001430
    Abandoned
  87. Meridian Pit
    Surface metal/non-metal · Boise Sand & Gravel Company · MSHA ID 1001446
    Abandoned
  88. MIKE'S SAND & GRAVEL, INC.
    Surface metal/non-metal · Mike'S Sand & Gravel Inc · MSHA ID 1001885
    Abandoned
  89. Mobile Plant
    metal/non-metal · Broken Rock sand & Gravel · MSHA ID 1002400
    New Mine
  90. No 3 Pit
    Surface metal/non-metal · Nelson Sand & Gravel Company Inc · MSHA ID 1000601
    Abandoned
  91. Pleasant Valley Pit
    Surface metal/non-metal · Anderson Construction Inc · MSHA ID 1001761
    Abandoned
  92. Portable Crusher
    Surface metal/non-metal · Marcum Asphalt & Gravel · MSHA ID 1001820
    Abandoned
  93. PORTABLE CRUSHER #2
    Surface metal/non-metal · Boise Paving & Asphalt Company · MSHA ID 1001904
    Abandoned
  94. Portable Screen Plant
    Surface metal/non-metal · Apple Sand & Gravel · MSHA ID 1001897
    Abandoned
  95. Pro Agg Mill
    Facility metal/non-metal · Pro Agg Inc · MSHA ID 1001632
    Abandoned
  96. PUG MILL 3-203
    Surface metal/non-metal · Morrison Knudsen Corp An Ohio Corp · MSHA ID 1001954
    Abandoned
  97. QS&G Nordberg
    Surface metal/non-metal · Quality Sand & Gravel, Inc. · MSHA ID 1002140
    Abandoned
  98. Ramco Inc Portable Plant
    Surface metal/non-metal · Ramco · MSHA ID 1001692
    Abandoned
  99. Rip Rap Pit-Gowen Field
    Surface metal/non-metal · Galey Construction Company Inc · MSHA ID 1001270
    Abandoned
  100. Rock Crusher #3
    Surface metal/non-metal · Double G Company · MSHA ID 1001796
    Abandoned
  101. Rumple Pit
    Surface metal/non-metal · Rock Contractors Inc · MSHA ID 1001386
    Abandoned
  102. Sarah'S Portable Plant No 1
    Surface metal/non-metal · B H Construction · MSHA ID 1001856
    Abandoned
  103. State Pit Source Ad-111-S
    Surface metal/non-metal · Boise Paving & Asphalt Company · MSHA ID 1001457
    Abandoned
  104. Swanfalls Pit
    Surface metal/non-metal · Ada County Highway District · MSHA ID 1000893
    Abandoned
  105. Ten Mile Pit
    Surface metal/non-metal · Ada County Highway District · MSHA ID 1000891
    Abandoned
  106. White Pit
    Surface metal/non-metal · Ada County Highway District · MSHA ID 1000819
    Abandoned
  107. Wild Cat Mine
    Surface metal/non-metal · Rick Hanson · MSHA ID 1001051
    Abandoned

Status, type and operator are as reported to MSHA. Fatality and accident counts are MSHA's reportable accident records for the mine; citations are inspector-issued violations on record. Each mine's own page carries the full detail.

Other counties in IdahoAll counties →
How to read these numbers

The register is MSHA's Mine Data Retrieval System: every operation ever assigned a mine ID, including ones abandoned decades ago, so the count is a history of mining in the county, not a count of working mines. A mine's county is the one its operator reported to MSHA. Fatality and accident counts start with MSHA's reportable-accident records (1983 onward); citation counts are inspector-issued violations on record. We are an independent research tool, not MSHA.