Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA CONTROLLER IDM02046
MINE PORTFOLIO
201 of 201 mines and facilities
2025-01-01 – 2026-10-17. All statuses 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.
Marshall, OKSurface · MSHA: Crushed, Broken Limestone NEC
—
—
0
0
—
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
104 of 201 mines with usable MSHA coordinates. Select a marker to open a mine.
Database snapshot · 2026-10-17. All 201 mines listed under this controller were checked; 0 have reports in the available quarters. Totals use current ownership.
Coal production
—
reported short tons
2025 Q1—No usable value reported
2025 Q2—No usable value reported
2025 Q3—No usable value reported
2025 Q4—No usable value reported
2026 Q1—No usable value reported
2026 Q2—No usable value reported
2026 Q3—No usable value reported
2026 Q4 *—No usable value reported
Hours worked
—
reported employee hours
2025 Q1—No usable value reported
2025 Q2—No usable value reported
2025 Q3—No usable value reported
2025 Q4—No usable value reported
2026 Q1—No usable value reported
2026 Q2—No usable value reported
2026 Q3—No usable value reported
2026 Q4 *—No usable value reported
Tons per hour
—
production ÷ hours worked
2025 Q1—No usable value reported
2025 Q2—No usable value reported
2025 Q3—No usable value reported
2025 Q4—No usable value reported
2026 Q1—No usable value reported
2026 Q2—No usable value reported
2026 Q3—No usable value reported
2026 Q4 *—No usable value reported
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
Quarterly production, employment and reporting coverage for Summit Materials LLC
Quarter
Coal (short tons)
Hours worked
Tons / hour
Avg. employees
Coverage
2025 Q1
—
—
—
—
No report
2025 Q2
—
—
—
—
No report
2025 Q3
—
—
—
—
No report
2025 Q4
—
—
—
—
No report
2026 Q1
—
—
—
—
No report
2026 Q2
—
—
—
—
No report
2026 Q3
—
—
—
—
No report
2026 Q4
—
—
—
—
No report
Safety and enforcement
2025-01-01 – 2026-10-17
Violations
459
69 significant & substantial (S&S)
2025 Q159
2025 Q2111
2025 Q354
2025 Q464
2026 Q187
2026 Q238
2026 Q340
2026 Q4 *6
Accident records
31
0 records classified as fatality
2025 Q12
2025 Q24
2025 Q35
2025 Q43
2026 Q17
2026 Q26
2026 Q34
2026 Q4 *0
Proposed penalties · USD
170,394.00
441 of 459 violations with amounts
2025 Q117,268
2025 Q238,019
2025 Q316,907
2025 Q444,055
2026 Q131,034
2026 Q213,431
2026 Q39,680
2026 Q4 *—
On-site inspection hours
1,999.50
263 inspections · 263 with hours
2025 Q1302.75
2025 Q2397.25
2025 Q3250.25
2025 Q4272.25
2026 Q1300.25
2026 Q2219.75
2026 Q3243.00
2026 Q4 *14.00
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
59
12
17,268.00
2
0
38
302.8
2025-Q2
111
19
38,019.00
4
0
45
397.3
2025-Q3
54
7
16,907.00
5
0
42
250.3
2025-Q4
64
15
44,055.00
3
0
33
272.3
2026-Q1
87
9
31,034.00
7
0
41
300.3
2026-Q2
38
3
13,431.00
6
0
29
219.8
2026-Q3
40
4
9,680.00
4
0
31
243.0
2026-Q4 *
6
0
—
0
0
4
14.0
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
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
14 linked operators.
Relationships reflect the selected mine status and current MSHA controller/operator fields.