CalMat Co. safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Brakes.
Sanger Plant · 040193730 CFR 56.14101(a)(2) · $226.00 proposed penalty
Warning signs.
Austin Quarry · 040595430 CFR 56.4101 · $151.00 proposed penalty
Impoundment Spot Inspection
Pleasanton Plant · 04019243.5 on-site hours reported
Regular Safety and Health Inspection
Sanger Plant · 040193723.0 on-site hours reported
Regular Safety and Health Inspection
Austin Quarry · 04059547.5 on-site hours reported
Regular Safety and Health Inspection
VAL VISTA - CITRUS GROVE 150 · 02028919.5 on-site hours reported
Compliance Follow-up Inspection
Pleasanton Plant · 04019242.0 on-site hours reported
Identification of power switches.
Pleasanton Plant · 040192430 CFR 56.12018 · $151.00 proposed penalty
Safe access.
Pleasanton Plant · 040192430 CFR 56.11001 · $151.00 proposed penalty
Regular Safety and Health Inspection
Pleasanton Plant · 040192415.8 on-site hours reported
Machinery
Napa Quarry · 0400023Dys awy frm wrk & restrctd act
Accident narrative
On April 13, 2026, employee experienced a right elbow strain disconnecting a loader shroud. Employee attributed it to an awkward position while using an impact gun. Reported on April 16, 2026, received an initial first aid assessment . Due to ongoing pain, a medical evaluation on April 28, 2026, diagnosed medial epicondylitis, leading to modified duty.
Handling of materials
LEXINGTON QUARRY · 0400946Days restricted activity only
Accident narrative
While removing belts from a screen, a motor fell onto the left ring finger of the repairman, resulting in a 2cm laceration that required four stitches.
Other
Sanger Plant · 0401937Days restricted activity only
Accident narrative
Mechanic reported being bitten by a wasp on EE's left wrist during a hooper area inspection. The following day, the employee presented with redness and swelling. Medical attention was sought, and antibiotics were prescribed.
Impoundment Spot Inspection
San Emidio Plant · 04018001.5 on-site hours reported
Spot Inspection
Austin Quarry · 040595411.0 on-site hours reported
Verbal Hazard Complaint Inspections
PENA BLANCA · 29017712.5 on-site hours reported
Requirement for container labels.
San Emidio Plant · 040180030 CFR 47.41(a) · $151.00 proposed penalty
Regular Safety and Health Inspection
San Emidio Plant · 040180026.0 on-site hours reported
Impoundment Spot Inspection
PALMDALE PLANT · 04021251.0 on-site hours reported
Construction and maintenance of guards.
San Emidio Plant · 040180030 CFR 56.14112(b) · $151.00 proposed penalty
Housekeeping.
San Emidio Plant · 040180030 CFR 56.20003(a) · $151.00 proposed penalty
Regular Safety and Health Inspection
SUN CITY PLANT · 02006328.5 on-site hours reported
Testing grounding systems.
West Broadway · 020226130 CFR 56.12028 · $151.00 proposed penalty
Regular Safety and Health Inspection
West Broadway · 020226112.5 on-site hours reported
Regular Safety and Health Inspection
West Plant · 02021666.0 on-site hours reported
Sources and definitions
MSHA Violations (issue date), Accidents (accident date) and Inspections (begin date).
Violation titles use current CFR headings to identify the cited rule; they are not the inspector’s account of what happened.
Status is from the current MSHA Mines snapshot, not the selected reporting period. Closed records can retain their last reported controller/operator.
Counts describe published rows, including contractor records; accident records are not distinct incidents or numbers of people injured.
Zero means no matching records in the imported sources, not proof of no events. Historical coverage differs by source; absence before a source begins reporting is not a zero incident rate. Invalid or absent dates and records after the snapshot are excluded.
S&S means SIG_SUB=Y. Fatality records use DEGREE_INJURY_CD=01. Proposed penalties are not final assessed or paid amounts; missing dollar values are omitted.
Inspection hours are SUM_TOTAL_ON_SITE_HOURS attributed to the inspection start date, without supervisor/trainee hours. Missing hours are omitted; a started inspection may still be open.
Portfolio totals use current mine membership, including events before the current owner or operator's tenure.