Keystone Cement Company safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Handtools (nonpowered)
KEYSTONE CEMENT COMPANY · 3600125All other cases (incl 1st aid)
Accident narrative
Employee was swinging a sledgehammer to clear a plugged chute. They swung the sledgehammer and missed the chute causing left thumb to be smashed in between the hammer's handle and the steel structure. This caused a laceration but did not require any stiches. The employee was prescribed antibiotics and a pain reliever.
Compliance Follow-up Inspection
KEYSTONE CEMENT COMPANY · 36001251.5 on-site hours reported
Inspection and cover plates.
KEYSTONE CEMENT COMPANY · 360012530 CFR 56.12032 · $642.00 proposed penalty
Safety defects; examination, correction and records.
KEYSTONE CEMENT COMPANY · 360012530 CFR 56.14100(b) · Significant and substantial (S&S) · $3,184.00 proposed penalty
Machinery, equipment, and tools.
KEYSTONE CEMENT COMPANY · 360012530 CFR 56.14205 · Significant and substantial (S&S) · $267.00 proposed penalty
Machinery, equipment, and tools.
KEYSTONE CEMENT COMPANY · 360012530 CFR 56.14205 · Significant and substantial (S&S) · $4,047.00 proposed penalty
Construction and maintenance of guards.
KEYSTONE CEMENT COMPANY · 360012530 CFR 56.14112(a)(2) · $151.00 proposed penalty
High-pressure hose connections.
KEYSTONE CEMENT COMPANY · 360012530 CFR 56.13021 · Significant and substantial (S&S) · $288.00 proposed penalty
Safety belts and lines.
KEYSTONE CEMENT COMPANY · 360012530 CFR 56.15005 · Significant and substantial (S&S) · $366.00 proposed penalty
Violation — cited standard not reported
KEYSTONE CEMENT COMPANY · 3600125Housekeeping.
KEYSTONE CEMENT COMPANY · 360012530 CFR 56.20003(a) · Significant and substantial (S&S) · $5,574.00 proposed penalty
Housekeeping.
KEYSTONE CEMENT COMPANY · 360012530 CFR 56.20003(a) · Significant and substantial (S&S) · $5,574.00 proposed penalty
Construction and maintenance of guards.
KEYSTONE CEMENT COMPANY · 360012530 CFR 56.14112(a)(2) · $165.00 proposed penalty
Inspection.
KEYSTONE CEMENT COMPANY · 360012530 CFR 56.4201(a)(2) · $818.00 proposed penalty
Housekeeping.
KEYSTONE CEMENT COMPANY · 360012530 CFR 56.20003(a) · Significant and substantial (S&S) · $7,084.00 proposed penalty
Machinery, equipment, and tools.
KEYSTONE CEMENT COMPANY · 360012530 CFR 56.14205 · $313.00 proposed penalty
Regular Safety and Health Inspection
KEYSTONE CEMENT COMPANY · 360012560.3 on-site hours reported
Electrical conductors.
KEYSTONE CEMENT COMPANY · 360012530 CFR 56.12004 · $465.00 proposed penalty
Housekeeping.
KEYSTONE CEMENT COMPANY · 360012530 CFR 56.20003(a) · Significant and substantial (S&S) · $7,084.00 proposed penalty
Construction and maintenance of guards.
KEYSTONE CEMENT COMPANY · 360012530 CFR 56.14112(a)(2) · $465.00 proposed penalty
Compliance Follow-up Inspection
KEYSTONE CEMENT COMPANY · 36001250.8 on-site hours reported
Machinery
KEYSTONE CEMENT COMPANY · 3600125All other cases (incl 1st aid)
Accident narrative
While cleaning the clean air side of Silo 51 air slide, an employee found the slide choked and not flowing. EE used a short air lance to clear cement and restore flow. Cement blew back into EE's face, entering EE's right eye under EE's safety glasses. EE was sent to an eye doctor; no damage was found and antibiotic eye drops were prescribed. No lost time resulted. Returned to job.
Compliance Follow-up Inspection
KEYSTONE CEMENT COMPANY · 36001251.0 on-site hours reported
Compliance Follow-up Inspection
KEYSTONE CEMENT COMPANY · 36001252.0 on-site hours reported
Handling of materials
KEYSTONE CEMENT COMPANY · 3600125No dys awy frm wrk,no rstr act
Accident narrative
On Feb 6, 2026, subcontractor, employee of Micronics (CRI MSHA ID C6220) was carrying blow pipes into the Keystone Cement Machine Shop. Leaving, their thumb was caught above the knuckle in a heavy counterweight-driven self-closing door that shut quickly and forcefully, causing a severe injury. The required stitches. The door's counterweight made it close fast, increasing the hazard
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.