O-N Minerals (Michigan) Company safety activity
MSHA violations, accident reports and inspections across the current mine portfolio.
Safety activity
Brakes.
O-N Minerals - Calcite Operation · 200006230 CFR 56.14101(a)(2) · $245.00 proposed penalty
Safety belts and lines.
O-N Minerals - Calcite Operation · 200006230 CFR 56.15005 · Significant and substantial (S&S) · $1,219.00 proposed penalty
Moving machine parts.
O-N Minerals - Calcite Operation · 200006230 CFR 56.14107(a) · $245.00 proposed penalty
Closure of valves.
O-N Minerals - Calcite Operation · 200006230 CFR 56.4603(b) · $165.00 proposed penalty
Temporary, portable containers.
O-N Minerals - Calcite Operation · 200006230 CFR 47.44(b) · $165.00 proposed penalty
Inspection.
O-N Minerals - Calcite Operation · 200006230 CFR 56.4201(a)(2) · $193.00 proposed penalty
Unguarded conveyors with adjacent travelways.
O-N Minerals - Calcite Operation · 200006230 CFR 56.14109(a) · $193.00 proposed penalty
Housekeeping.
O-N Minerals - Calcite Operation · 200006230 CFR 56.20003(a) · $193.00 proposed penalty
Regular Safety and Health Inspection
O-N Minerals - Calcite Operation · 200006284.5 on-site hours reported
Housekeeping.
O-N Minerals - Calcite Operation · 200006230 CFR 56.20003(a) · Significant and substantial (S&S) · $959.00 proposed penalty
Temporary, portable containers.
Carmeuse - Port Inland Operation · 200098530 CFR 47.44(a)(2) · $151.00 proposed penalty
Inspection.
Carmeuse - Port Inland Operation · 200098530 CFR 56.4201(a)(1) · $151.00 proposed penalty
Regular Safety and Health Inspection
Carmeuse - Port Inland Operation · 200098524.0 on-site hours reported
Protection of gas cylinder valves.
Carmeuse - Port Inland Operation · 200098530 CFR 56.16006 · $151.00 proposed penalty
Falling/sliding/rolling materials
O-N Minerals, Cedarville Operation · 2000061Dys awy frm wrk & restrctd act
Accident narrative
ee was standing in the center deck discharge lip and the center chute, which was folded up on its hinges, came down and landed on the ee's leg/ankle resulting in a fracture.
Handling of materials
O-N Minerals - Calcite Operation · 2000062Days restricted activity only
Accident narrative
EE was installing idler. Pushed on idler to put bolt in to hold idler from moving EE felt a pop in their right wrist. Medical treatment sought. Work restrictions issued due to sprain.
Compliance Follow-up Inspection
O-N Minerals, Cedarville Operation · 20000615.8 on-site hours reported
Handling of materials
O-N Minerals - Calcite Operation · 2000062Days restricted activity only
Accident narrative
EE was moving an idler for conveyor. One end was in the air and fell on EE left foot missing the steel toe of EE's boot by an inch. Idler is 82" long by 6" wide.
Spot Inspection
O-N Minerals, Cedarville Operation · 20000616.3 on-site hours reported
Impoundment Spot Inspection
O-N Minerals, Cedarville Operation · 20000613.0 on-site hours reported
Records of training.
O-N Minerals, Cedarville Operation · 200006130 CFR 46.9(b)(5) · $151.00 proposed penalty
Examination of working places.
O-N Minerals, Cedarville Operation · 200006130 CFR 56.18002(b) · Significant and substantial (S&S) · $4,047.00 proposed penalty
Impoundment Spot Inspection
O-N Minerals - Calcite Operation · 20000622.8 on-site hours reported
Examination of working places.
O-N Minerals, Cedarville Operation · 200006130 CFR 56.18002(a) · Significant and substantial (S&S) · $29,904.00 proposed penalty
New task training.
O-N Minerals, Cedarville Operation · 200006130 CFR 46.7(a) · Significant and substantial (S&S) · $29,904.00 proposed penalty
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.