Coal production
0reported short tons
ACTIVE / CONTROLLER PORTFOLIO
Snyder Associated Companies Inc
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA CONTROLLER IDM00734
MINE PORTFOLIO
7 of 7 mines and facilities
2025-01-01 – 2026-10-18. Active records; production reporting is not required.
Material, method and type filters apply to this table. The portfolio’s status applies to the entire page. GEM fields describe their own release, not the selected MSHA year.
| Mine | Location / type | Coal · short tons | Hours worked | Violations | Accident records | On-site inspection hours |
|---|---|---|---|---|---|---|
| Armstrong Cement & Supply Corp3600215 · Active6/8 quarters reported | Butler, PAFacility · MSHA: Cement | 0 | 137,774 | 28 | 4 | 119.0 |
| BISON MINE3610107 · Active6/8 quarters reported | Armstrong, PAUnderground · MSHA: Crushed, Broken Limestone NEC | 0 | 50,765 | 3 | 0 | 255.0 |
| Graff Mine3607667 · Active6/8 quarters reported | Armstrong, PASurface · MSHA: Crushed, Broken Limestone NEC | 0 | 101,893 | 3 | 1 | 80.3 |
| HARRISVILLE3600003 · Active6/8 quarters reported | Butler, PASurface · MSHA: Crushed, Broken Limestone NEC | 0 | 106,204 | 10 | 1 | 74.8 |
| Murrinsville Plant3609318 · Active6/8 quarters reported | Butler, PASurface · MSHA: Crushed, Broken Limestone NEC | 0 | 64,303 | 7 | 1 | 88.8 |
| Princeton3608093 · Active6/8 quarters reported | Lawrence, PASurface · MSHA: Crushed, Broken Limestone NEC | 0 | 105,806 | 12 | 1 | 78.8 |
| SLIPPERY ROCK3606146 · Active6/8 quarters reported | Butler, PASurface · MSHA: Crushed, Broken Limestone NEC | 0 | 87,242 | 2 | 1 | 56.5 |
Production and hours sum available quarterly reports. — means unavailable; zero safety records means none in the selected imported period. Ownership reflects the current MSHA record.
LOCATION
Portfolio map
7 of 7 mines with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Armstrong Cement & Supply Corp40.79500, -79.69750Open map ↗
- BISON MINE40.83889, -79.67917Open map ↗
- Graff Mine40.85056, -79.65000Open map ↗
- HARRISVILLE41.14083, -79.99583Open map ↗
- Murrinsville Plant41.13639, -79.91750Open map ↗
- Princeton40.95611, -80.19417Open map ↗
- SLIPPERY ROCK41.03833, -80.05917Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-18. All 7 mines listed under this controller were checked; 7 have reports in the available quarters. Totals use current ownership.
Hours worked
653,987reported employee hours
Tons per hour
0.00production ÷ hours worked
Missing values appear as —. Totals use available reports. Tons per hour requires production and hours for the same quarters and a nonzero hours total. * Striped bars mark partial mine coverage or an incomplete quarter. See the table for coverage.
Quarterly data and reporting coverage
| Quarter | Coal (short tons) | Hours worked | Tons / hour | Avg. employees | Coverage |
|---|---|---|---|---|---|
| 2025 Q1 | 0 | 107,169 | 0.00 | 191 | 7/7 mines reporting |
| 2025 Q2 | 0 | 111,831 | 0.00 | 195 | 7/7 mines reporting |
| 2025 Q3 | 0 | 111,446 | 0.00 | 195 | 7/7 mines reporting |
| 2025 Q4 | 0 | 105,068 | 0.00 | 193 | 7/7 mines reporting |
| 2026 Q1 | 0 | 105,014 | 0.00 | 188 | 7/7 mines reporting |
| 2026 Q2 | 0 | 113,459 | 0.00 | 196 | 7/7 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-18
Violations
6516 significant & substantial (S&S)
Accident records
90 records classified as fatality
Proposed penalties · USD
28,176.0061 of 65 violations with amounts
On-site inspection hours
753.0041 inspections · 41 with hours
Counts are published records, including contractor records. * The quarter was incomplete at the snapshot date; recent counts may rise as reports arrive. — means no reported amount or hours. Portfolio totals use current membership.
Quarterly safety data
| Quarter | Violations | S&S | Proposed USD | Accident records | Fatality records | Inspections | On-site hours |
|---|---|---|---|---|---|---|---|
| 2025-Q1 | 6 | 0 | 906.00 | 2 | 0 | 5 | 75.5 |
| 2025-Q2 | 23 | 6 | 14,375.00 | 1 | 0 | 8 | 190.8 |
| 2025-Q3 | 3 | 2 | 2,225.00 | 2 | 0 | 6 | 58.8 |
| 2025-Q4 | 15 | 5 | 8,542.00 | 2 | 0 | 7 | 182.3 |
| 2026-Q1 | 1 | 0 | 151.00 | 2 | 0 | 3 | 25.3 |
| 2026-Q2 | 10 | 3 | 1,524.00 | 0 | 0 | 7 | 125.0 |
| 2026-Q3 | 4 | 0 | 453.00 | 0 | 0 | 3 | 80.3 |
| 2026-Q4 * | 3 | 0 | — | 0 | 0 | 2 | 15.3 |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- Armstrong Cement & Supply Corp · 3600215
56.18002(a)(1) · S&S · $151.00 proposed
- Armstrong Cement & Supply Corp · 3600215
56.20003(a) · S&S · $151.00 proposed
- Armstrong Cement & Supply Corp · 3600215
Regular Safety and Health Inspection · 21.5 on-site hours
- BISON MINE · 3610107
Regular Safety and Health Inspection · 42.8 on-site hours
- BISON MINE · 3610107
Spot Inspection · 1.5 on-site hours
- BISON MINE · 3610107
57.12008 · $151.00 proposed
- Princeton · 3608093
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was moving crusher break plates in storage building. One of the plates started to fall over and EE pushed it back with EE's foot and felt a pop in EE's knee. EE went for treatment on 03/19/2026 and was diagnosed with a right knee injury and primary osteoarthritis.
- Armstrong Cement & Supply Corp · 3600215
Compliance Follow-up Inspection · 4.8 on-site hours
- Armstrong Cement & Supply Corp · 3600215
HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
Employee was removing cast liners within rawmill for replacement. Using a sledge hammer to loosen the first liner, employee struck corner of liner and a piece fractured and came back and struck employee in the nose causing laceration and broken nose.
- BISON MINE · 3610107
Regular Safety and Health Inspection · 19.0 on-site hours
- Graff Mine · 3607667
HANDTOOLS (NONPOWERED) · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was cleaning the tracks of the bulldozer with a shovel. EE heard a pop and experienced pain in EE's right arm. Employee continued to work unrestricted until EE went to an orthopedic specialist on 12/30/2025. EE was diagnosed with a tear of the right rotator cuff. The extent of the tear is unspecified. The employee is now on restricted duty.
- SLIPPERY ROCK · 3606146
HANDLING OF MATERIALS · PERM TOT OR PERM PRTL DISABLTY
Accident narrative
IP was attempting to find a leak in a hydraulic system on EE's repump truck. While moving a line, hydraulic fluid was injected into right hand index finger.
- SLIPPERY ROCK · 3606146
Regular Safety and Health Inspection · 21.8 on-site hours
- HARRISVILLE · 3600003
56.4104(a) · $151.00 proposed
- HARRISVILLE · 3600003
56.14107(a) · S&S · $165.00 proposed
- HARRISVILLE · 3600003
56.4201(a)(1) · $151.00 proposed
- Armstrong Cement & Supply Corp · 3600215
56.20003(a) · S&S · $245.00 proposed
- Armstrong Cement & Supply Corp · 3600215
56.20003(a) · S&S · $245.00 proposed
- Armstrong Cement & Supply Corp · 3600215
56.20003(a) · $151.00 proposed
- Armstrong Cement & Supply Corp · 3600215
56.14112(a)(1) · $151.00 proposed
- Armstrong Cement & Supply Corp · 3600215
56.18002(a) · $151.00 proposed
- Armstrong Cement & Supply Corp · 3600215
56.18002(a) · S&S · $6,041.00 proposed
- Graff Mine · 3607667
Regular Safety and Health Inspection · 25.3 on-site hours
- HARRISVILLE · 3600003
Regular Safety and Health Inspection · 29.0 on-site hours
- Princeton · 3608093
56.12032 · $151.00 proposed
Safety sources and definitions
MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-18.
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.
CFR headings link to the current Title 30 index; they are not historical legal determinations.
SELECTED PORTFOLIO
2 linked operators.
Relationships reflect the selected mine status and current MSHA controller/operator fields.