Mining Incidents

Black Diamond Endeavors LLC: 153 MSHA citations Metal/Non-Metal

Black Diamond Endeavors · Surface
Bronte, Runnels County, TX  ·  Active
MSHA Mine ID: 4105275

Black Diamond Endeavors LLC has $134K in proposed MSHA penalties and $71K outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
0
Years on record
Latest incident
Compliance record
MSHA citations since 2017
153
citations
43
significant & substantial
$134,478
proposed penalties
$63,062
paid to date
47% of proposed penalties paid to date, a $71,416 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2017
33
inspections on record
438
inspection hours
n/a
citations per 100 inspection hours
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.
Rate withheld: 438 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Black Diamond Endeavors LLC has $134K in proposed MSHA penalties and $71K outstanding across 0 contested dockets.

Penalty disposition
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$134K
proposed penalties
$134K
current assessed
$63K
paid to date
$71K
outstanding
151 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-04-15.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
28.5%
significant & substantial
7.9%
high negligence or reckless
28.5%
reasonably likely or greater
34.4%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 6.0% low, 86.1% moderate, 7.9% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.

Black Diamond Endeavors LLC recorded 0.00 reportable injury cases per 100 full-time workers in 2023.

Injury rate, 2023
This rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.
0.00
total case rate
0.00
days-away rate
0.000
fatality rate
No reportable injury cases in any year shown. Employee-hours were reported in each of those years, so these are true zeros rather than missing data. Citations, listed in the compliance record above, are inspector-found violations and are counted separately from worker injuries.
Below average. The US metal and nonmetal mining average was 1.78 and the all-US-mining average was 2.10 cases per 100 workers.
In Texas, metal and nonmetal mining averaged 1.29 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
Year total case rate days-away fatal
2023 * 0.00 0.00 0.000
2022 * 0.00 0.00 0.000
2021 * 0.00 0.00 0.000
2020 * 0.00 0.00 0.000
2018 * 0.00 0.00 0.000
* Fewer than 100,000 employee-hours that year; the rate is less stable.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Ownership history
  1. River Road Aggregates 2017 to 2019
  2. River Road Aggregates LLC 2019 to 2025
  3. Black Diamond Endeavors 2025 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 7
2025 6
2024 7
2023 37
2022 22
2021 16
2020 10
2019 7
2018 9
Source: MSHA quarterly employment and production, updated weekly.

Black Diamond Endeavors LLC sits in Runnels County, Texas, where the Census mining category is 6.6% of county employment.

Local economic context
County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Runnels County, Texas · Population 9,880
6.6%
Mining share of county employment
$63,490
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
Quarterly safety rates
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
2026 Q2 4,168 9 6 2159.3
2026 Q1 2,923 0 0 0.0
2025 Q4 3,223 8 2 2482.2
2025 Q3 2,851 0 0 0.0
2025 Q2 1,539 8 3 5198.2
2025 Q1 3,048 16 3 5249.3
2024 Q4 2,410 0 0 0.0
2024 Q3 1,409 0 0 0.0
Show 26 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 1,224 8 0 6535.9
2024 Q1 620 17 2 27419.4
2023 Q4 16,179 2 0 123.6
2023 Q3 1,437 4 1 2783.6
2023 Q2 19,151 0 0 0.0
2023 Q1 18,779 20 10 1065.0
2022 Q4 14,375 0 0 0.0
2022 Q3 15,477 4 1 258.4
2022 Q2 12,366 0 0 0.0
2022 Q1 10,046 8 4 796.3
2021 Q4 9,325 0 0 0.0
2021 Q3 14,247 8 1 561.5
2021 Q2 9,741 0 0 0.0
2021 Q1 5,291 7 1 1323.0
2020 Q4 6,479 0 0 0.0
2020 Q3 6,298 6 2 952.7
2020 Q2 5,363 0 0 0.0
2020 Q1 4,991 0 0 0.0
2019 Q4 4,793 9 2 1877.7
2019 Q3 4,028 0 0 0.0
2019 Q2 4,695 0 0 0.0
2019 Q1 4,215 3 0 711.7
2018 Q4 4,632 0 0 0.0
2018 Q3 4,989 2 0 400.9
2018 Q2 6,763 0 0 0.0
2018 Q1 4,233 0 0 0.0

No reportable incidents on file.

MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.