Data / Mines / Nevada / Lyon County
Mines in Lyon County, Nevada: 28 open mines
MSHA lists 28 open mines in Lyon County, Nevada, run by 19 operators and employing 406 people. Since January 1, 2022 its inspectors issued 421 citations and orders there with $152,418 in proposed penalties, and operators reported 58 injury or illness cases. The operators with the most open mines are H E Hunewill Construction Company Inc; Cinderlite Aggregates; Cruz Construction. Data from MSHA, November 6, 2026.
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- Open mines
- 28
- Operators
- 19
- Employees
- 406
- Active
- 13
- Intermittent
- 10
- Temporarily Idled
- 4
- NonProducing
- 1
- Mines run by individuals, counted and not listed
- 2
- Citations and orders since January 1, 2022
- 421
- Significant and substantial
- 64 (15.2%)
- Closure orders
- 10
- High negligence or reckless
- 26
- Proposed penalties
- $152,418
- Amount paid so far
- $118,915
- Inspections
- 284
- Inspector hours on site
- 2,250
- Citations per inspection
- 1.48 (all mines 2.30)
- Accident reports
- 80
- Injury and illness cases
- 58
- Fatalities
- 0
- Latest MSHA record
- October 20, 2026
Operators with the most open mines in Lyon County, Nevada
Ranked by open mines, then by citations. Sole proprietors and individuals are not listed.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| H E Hunewill Construction Company Inc | 4 | 11 | 18 | $2,714 | 0 |
| Cinderlite Aggregates | 3 | 10 | 6 | $882 | 0 |
| Cruz Construction | 3 | 15 | 6 | $858 | 0 |
| Acg Materials | 2 | 83 | 19 | $3,681 | 0 |
| Granite Construction Company | 2 | 3 | 0 | $0 | 0 |
| Anthem Copper LLC | 1 | 95 | 129 | $30,659 | 31 |
| Nevada Cement Company | 1 | 123 | 121 | $61,645 | 17 |
| 3D Concrete LLC | 1 | 10 | 78 | $44,835 | 7 |
| V & T Rock Inc. | 1 | 3 | 9 | $1,529 | 1 |
| Q&D Construction LLC | 1 | 12 | 7 | $979 | 0 |
| Geo-Nevada Inc. | 1 | 3 | 6 | $988 | 0 |
| Imerys Filtration Minerals, Inc. | 1 | 16 | 6 | $868 | 1 |
| Basalite Concrete Products, LLC | 1 | 5 | 4 | $950 | 0 |
| Joy Engineering | 1 | 5 | 3 | $453 | 1 |
| Owens Wood Products, Inc | 1 | 4 | 1 | $151 | 0 |
| Gopher Construction Inc | 1 | 0 | 0 | $0 | 0 |
| MVM Artistic Stone Designs, LLC | 1 | 3 | 0 | $0 | 0 |
Operators with the most citations in Lyon County, Nevada
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Anthem Copper LLC | 1 | 95 | 129 | $30,659 | 31 |
| Nevada Cement Company | 1 | 123 | 121 | $61,645 | 17 |
| 3D Concrete LLC | 1 | 10 | 78 | $44,835 | 7 |
| Acg Materials | 2 | 83 | 19 | $3,681 | 0 |
| H E Hunewill Construction Company Inc | 4 | 11 | 18 | $2,714 | 0 |
| V & T Rock Inc. | 1 | 3 | 9 | $1,529 | 1 |
| Q&D Construction LLC | 1 | 12 | 7 | $979 | 0 |
| Cinderlite Aggregates | 3 | 10 | 6 | $882 | 0 |
| Cruz Construction | 3 | 15 | 6 | $858 | 0 |
| Geo-Nevada Inc. | 1 | 3 | 6 | $988 | 0 |
| Imerys Filtration Minerals, Inc. | 1 | 16 | 6 | $868 | 1 |
| Basalite Concrete Products, LLC | 1 | 5 | 4 | $950 | 0 |
| Joy Engineering | 1 | 5 | 3 | $453 | 1 |
| Owens Wood Products, Inc | 1 | 4 | 1 | $151 | 0 |
| Granite Construction Company | 2 | 3 | 0 | $0 | 0 |
| Gopher Construction Inc | 1 | 0 | 0 | $0 | 0 |
| MVM Artistic Stone Designs, LLC | 1 | 3 | 0 | $0 | 0 |
Mines with the most citations
Open mines, ranked by citations and orders since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Anthem 1 | Anthem Copper LLC | Lyon County, NV | Copper ore | 95 | 129 |
| Nevada Cement Co Cement Plant | Nevada Cement Company | Lyon County, NV | Cement | 123 | 121 |
| Dayton Materials | 3D Concrete LLC | Lyon County, NV | Construction sand and gravel | 10 | 78 |
| Arcosa Adams Claim #1850 | Acg Materials | Lyon County, NV | Gypsum | 83 | 19 |
| Moundhouse Aggregate Pit | V & T Rock Inc. | Lyon County, NV | Construction sand and gravel | 3 | 9 |
| Maggie Creek Ranch Pit | Q&D Construction LLC | Lyon County, NV | Sand, industrial | 12 | 7 |
| Fernley Plant | Imerys Filtration Minerals, Inc. | Lyon County, NV | Diatomaceous earth (diatomite) | 16 | 6 |
| Crc450x | H E Hunewill Construction Company Inc | Lyon County, NV | Construction sand and gravel | 4 | 6 |
| Spring Valley Mine | Geo-Nevada Inc. | Lyon County, NV | Gold ore | 3 | 6 |
| 1830PH SN. 412035 | H E Hunewill Construction Company Inc | Lyon County, NV | Construction sand and gravel | 2 | 5 |
| Cedar Rapids 3042 Portable Jaw Plant | H E Hunewill Construction Company Inc | Lyon County, NV | Construction sand and gravel | 2 | 5 |
| Basalite Dayton | Basalite Concrete Products, LLC | Lyon County, NV | Crushed, broken stone | 5 | 4 |
| Yerington Pit | Cinderlite Aggregates | Lyon County, NV | Construction sand and gravel | 3 | 4 |
| Juniper Ridge Quarry | Joy Engineering | Lyon County, NV | Construction sand and gravel | 5 | 3 |
| NV Aggregates Screen #1 | Cruz Construction | Lyon County, NV | Construction sand and gravel | 5 | 2 |
| NV Aggregates Jaw #1 | Cruz Construction | Lyon County, NV | Construction sand and gravel | 5 | 2 |
| NV Aggregates Cone #1 | Cruz Construction | Lyon County, NV | Construction sand and gravel | 5 | 2 |
| Cedarapids MVP450 Cone S/N49609 | H E Hunewill Construction Company Inc | Lyon County, NV | Sand, common | 3 | 2 |
| Portable Crusher #1 | Cinderlite Aggregates | Lyon County, NV | Sand, industrial | 4 | 1 |
| Great Basin Sand and Gravel | Owens Wood Products, Inc | Lyon County, NV | Construction sand and gravel | 4 | 1 |
| Screen #1 | Cinderlite Aggregates | Lyon County, NV | Construction sand and gravel | 3 | 1 |
| Dayton Pit | Granite Construction Company | Lyon County, NV | Construction sand and gravel | 3 | 0 |
| Pleiades Mine | MVM Artistic Stone Designs, LLC | Lyon County, NV | Gemstones | 3 | 0 |
| Mull Lane | Gopher Construction Inc | Lyon County, NV | Sand, industrial | 0 | 0 |
| Ludwig #1873 | Acg Materials | Lyon County, NV | Gypsum | 0 | 0 |
| Portable #1 | Granite Construction Company | Lyon County, NV | Construction sand and gravel | 0 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Construction sand and gravel | 14 | 50% |
| Sand, industrial | 4 | 14.3% |
| Gypsum | 2 | 7.1% |
| Sand, common | 2 | 7.1% |
| Cement | 1 | 3.6% |
| Diatomaceous earth (diatomite) | 1 | 3.6% |
| Crushed, broken stone | 1 | 3.6% |
| Gold ore | 1 | 3.6% |
| Copper ore | 1 | 3.6% |
| Gemstones | 1 | 3.6% |
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2022 | 42 | 11 | $11,277 | 11 |
| 2023 | 95 | 5 | $22,863 | 17 |
| 2024 | 124 | 9 | $43,078 | 11 |
| 2025 | 110 | 31 | $62,271 | 8 |
| 2026 | 50 | 8 | $12,929 | 11 |
Standards cited most at mines in Lyon County, Nevada
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 37 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 29 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 23 |
| 30 CFR 56.4104 | Surface metal and nonmetal mines | 14 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 10 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 9 |
| 30 CFR 57.14100 | Underground metal and nonmetal mines | 9 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 7 |
| 30 CFR 57.3360 | Underground metal and nonmetal mines | 7 |
| 30 CFR 57.11001 | Underground metal and nonmetal mines | 7 |
Injury and illness cases at mines in Lyon County, Nevada
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 43 |
| No lost time, or an occupational illness | 15 |
What the accident reports at mines in Lyon County, Nevada describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 18 |
| Hoisting | 17 |
| Slip or fall of person | 14 |
| Handtools (nonpowered) | 9 |
| Machinery | 9 |
| Powered haulage | 4 |
| Fall of roof or back | 4 |
| Nonpowered haulage | 1 |
| Ignition or explosion of gas or dust | 1 |
| Disorders (physical agents) | 1 |
Equipment named in accident reports at mines in Lyon County, Nevada
| Equipment | Reports |
|---|---|
| Elevator | 17 |
| Hand tools (not powered) | 9 |
| Carriage-mounted drills | 5 |
| Blow pipe | 4 |
| Trucks | 3 |
| Front-end loader | 3 |
| Bulldozer | 2 |
| Packaging machine | 1 |
| Machine | 1 |
| Ore haulage trucks - off highway trucks | 1 |
Updated November 6, 2026. Read from US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets. US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.