Mining Incidents

OnCore 1 Metal/Non-Metal

Big Spring, Howard County, TX  ·  Active
MSHA Mine ID: 4105523

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Fatalities
0
Total incidents
6
Years on record
2022–2025
Latest incident
Jan 2025
Compliance record
MSHA citations since 2021
67
citations
13
significant & substantial
$27,625
proposed penalties
$27,449
paid to date
Source: MSHA violations data, updated weekly.
Quarterly safety rates
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
2025 Q4 13,374 0 0 0.0
2025 Q3 11,117 0 0 0.0
2025 Q2 13,586 3 0 220.8
2025 Q1 1,032 0 0 0.0
2024 Q4 13,924 11 0 790.0
2024 Q3 10,899 0 0 0.0
2024 Q2 15,744 3 1 190.5
2024 Q1 1,552 6 1 3866.0
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.

Reportable incidents

6 on file

2025 · 1 incident

January 17, 2025 TX · Metal/Non-Metal mine manager, mine foreman, mine owner MACHINERY
OnCore Processing LLC · Struck by... (Not Elsewhere Classified)

Employee was utilizing a grinder to cut a bearing sleeve. This task was necessary to replace the bearing on the head pulley of the C1 belt. Midway through the task, the grinder unexpectedly kicked back towards the employee, causing the grinder's disk to make contact with the employee's left forearm resulting in a laceration.

2023 · 2 incidents

August 25, 2023 TX · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer OTHER
OnCore Processing LLC · Struck by flying object

Individual was greasing excavator prior to working and outdoor conditions were windy and dry. EE recalls sand blowing into right eye. EE attempted to wipe it away and believed EE had done so. Reported to manager on 28 Aug as EE felt EE needed to get medical attention to the eye.

March 13, 2023 TX · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
OnCore Processing LLC · Struck by... (Not Elsewhere Classified)

IW was struck by co-workers hardhat. Hardhat was swung down and away and was swung into the injured worker standing behind.

2022 · 3 incidents

December 3, 2022 TX · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
OnCore Processing LLC · Struck by flying object

While replacing a damaged digger tooth on excavator bucket, as hammer was swung it impacted corner of tooth and broke off and entered right hand between thumb and index finger (Crotch of hand).

June 28, 2022 TX · Metal/Non-Metal outside foreman, leadman SLIP OR FALL OF PERSON
OnCore Processing LLC · Over-exertion (Not Elsewhere Classified)

While climbing down the ladder, IP right foot slipped off the last step (rung) on the ladder. IP attempted to catch self resulting in a strain to EE's right elbow. Incident occurred on 06/28/22, reported on 06/29/2022 First Aid Case. Seen by MD on 07/06/2022.

February 10, 2022 TX · Metal/Non-Metal miner, prospector, nec SLIP OR FALL OF PERSON
OnCore Processing LLC · Fall to the walkway or working surface

Employee fell on frozen ground landing on their side resulting in a shoulder strain.