Data / Mines / California / Lucerne Valley Plant and Quarry

Lucerne Valley Plant and Quarry: 107 MSHA citations

Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.

Lucerne Valley Plant and Quarry is an active crushed, broken limestone surface mine in San Bernardino County, California, operated by Specialty Minerals Inc with 86 employees on MSHA's record (mine ID 0400219). Since January 1, 2022 MSHA inspectors issued 107 citations and orders there with $41,094 in proposed penalties, and 15 accident reports were filed there, with 12 injury or illness cases.

The request: Watch Lucerne Valley Plant and Quarry (MSHA mine ID 0400219) in San Bernardino County, California: each new citation and each accident report. $10 of work on sign-up, no card.

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MSHA mine ID

0400219

Status

Active since March 24, 1987

Main commodity

Crushed, broken limestone

Mine type

Surface

County

San Bernardino County, California

Nearest town

Lurcerne Valley

Operator

Specialty Minerals Inc

Parent company

Minerals Technologies Inc

Employees

86

MSHA field office

San Bernardino CA Field Office

Citations and orders since January 1, 2022

107

Significant and substantial

22 (20.6%)

Closure orders

0

High negligence or reckless

7

Proposed penalties

$41,094

Amount paid so far

$41,094

Inspections

19

Inspector hours on site

466

Citations per inspection

5.63 (all mines 2.30)

Accident reports

15

Injury and illness cases

12

Fatalities

0

Latest MSHA record

June 25, 2026

Citations issued to contractors here

1 ($168 proposed)

Citations and injury cases by year

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

Standards cited most at Lucerne Valley Plant and Quarry

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 Lucerne Valley Plant and Quarry

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

What the accident reports at Lucerne Valley Plant and Quarry describe

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

Equipment named in accident reports at Lucerne Valley Plant and Quarry

Other open mines in San Bernardino County, California

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.