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Alcoa Corporation: 17 MSHA citations controller

MSHA controller ID: 0167923

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Email me when a new MSHA incident is filed at any mine Alcoa Corporation controls.

Fatalities
0
Total incidents
1
Mines on record
1
Years on record
2023
Public-issuer link

Alcoa Corp (AA) discloses mines under this controller in its SEC Dodd-Frank Section 1503 (EX-95) mine-safety filings.

How to read an EX-95 filing See the issuer mine-safety liability profile
Compliance record
MSHA citations since 2023
17
citations
4
significant & substantial
$8,587
proposed penalties
$6,926
paid to date
81% of proposed penalties paid to date, a $1,661 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2022
20
inspections on record
636
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: 636 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Penalty disposition
ⓘ Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$9K
proposed penalties
$9K
current assessed
$7K
paid to date
$2K
outstanding
7 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-07-06.
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.
23.5%
significant & substantial
11.8%
high negligence or reckless
23.5%
reasonably likely or greater
17.6%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 29.4% low, 58.8% moderate, 11.8% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Injury rate, 2024
ⓘ 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 coal mining average was 3.16 and the all-US-mining average was 2.08 cases per 100 workers.
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
2026 * 0.00 0.00 0.000
2024 * 0.00 0.00 0.000
2023 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.
Health sampling
ⓘ A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.

Respirable coal dust
ⓘ Respirable coal dust and silica figures cover coal facilities. Dust compliance is measured against the current 1.5 mg/m3 standard; samples predating the 2014 standard are included, so compliance rates are a coarse historical signal.

Last sampled: 2026-07-22
100%
within 1.5 mg/m3
69
samples
0.69
dust max (mg/m3)
0
over MSHA ECV
ⓘ The excessive concentration value (ECV) is MSHA's own per-sample enforcement threshold, which builds in measurement uncertainty; a sample over its ECV can trigger a citation. The count covers only samples MSHA assigned an ECV.
32 samples taken by MSHA inspectors, 37 by the operator.
Most-sampled occupations
  • BULLDOZER OPERATOR45
  • HIGHWALL DRILL OPERATOR17
  • COAL TRUCK DRIVER3

Silica (quartz)

Last sampled: 2026-07-29
5.6
silica avg (%)
8
samples
15.1
silica max (%)
Most-sampled occupations
  • HIGHWALL DRILL OPERATOR5
  • BULLDOZER OPERATOR3
See US coal mines ranked by silica in their dust samples.

Noise
ⓘ The share counts noise samples whose measured dose exceeded the 90 dBA permissible exposure limit. It describes the sampled workplace, not what reached the miner's ear: hearing conservation programs and the hearing protection worn during the shift are recorded separately and are not reflected here.

Last sampled: 2026-07-22
0%
over PEL
24
samples
Most-sampled occupations
  • BULLDOZER OPERATOR12
  • HIGHWALL DRILL OPERATOR5
  • COAL TRUCK DRIVER3
See US mines ranked by noise samples over the legal limit.
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly.

Top causes

Incident timeline

2023
1

Operators under this controller

Mines on record

For insurers, brokers, and safety consultants

Where Alcoa Corporation stands on silica, penalties, and injury rate

MSHA's standard limits respirable silica to 50 micrograms per cubic metre, but MSHA publishes dust and quartz as separate files and never the silica figure itself. We derive it per sample, score it against the limit, and set the operator's injury rate against a benchmark built from the full MSHA operator record. With the 26-year penalty trail, contest posture, and fatality history. Delivered as a PDF with the underlying data as CSV.

The federal record itself stays free on this site. What costs money, and why.

See a sample report
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