Data / Mines / Nevada / Nonmetal mines

Nonmetal mineral mines in Nevada: 49 open mines

MSHA lists 49 open nonmetal mineral mines in Nevada, run by 36 operators and employing 868 people. Since January 1, 2022 its inspectors issued 908 citations and orders there with $585,018 in proposed penalties, and operators reported 60 injury or illness cases. The operators with the most open mines are U.S. Silica Company, LLC; M-I L L C; Martin Marietta Materials, Inc.. Data from MSHA, November 6, 2026.

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Open mines

49

Operators

36

Employees

868

Active

23

Intermittent

19

Temporarily Idled

7

Mines run by individuals, counted and not listed

5

Citations and orders since January 1, 2022

908

Significant and substantial

138 (15.2%)

Closure orders

22

High negligence or reckless

54

Proposed penalties

$585,018

Amount paid so far

$348,223

Inspections

489

Inspector hours on site

3,141

Citations per inspection

1.86 (all mines 2.30)

Accident reports

64

Injury and illness cases

60

Fatalities

0

Latest MSHA record

November 4, 2026

Operators with the most open mines in Nevada

Ranked by open mines, then by citations. Sole proprietors and individuals are not listed.

Operators with the most citations in Nevada

Citations and orders issued since January 1, 2022 at their open mines here.

Mines with the most citations

Open mines, ranked by citations and orders since January 1, 2022.

Main commodities

Citations and injury cases by year

Calendar years since 2022; 2026 runs to the date of the MSHA files.

Standards cited most at nonmetal mineral mines in Nevada

Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.

Injury and illness cases at nonmetal mineral mines in Nevada

Accident reports by degree of injury, as the operator reported them to MSHA.

What the accident reports at nonmetal mineral mines in Nevada describe

Accident classification, as MSHA codes the circumstances that contributed most directly.

Equipment named in accident reports at nonmetal mineral mines in Nevada

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.