MDI Mining operator
Controlled by
Michael Denny
MSHA operator ID: L15229
- Fatalities
- 0
- Total incidents
- 4
- Mines on record
- 1
- Years on record
- 2006–2020
Compliance record
MSHA citations since 2000
378
citations
132
significant & substantial
$122,462
proposed penalties
$95,010
paid to date
78% of proposed penalties paid to date, a $27,452 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
138
inspections on record
1,626
inspection hours
23.2
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.378 citations across 1,626 inspection hours.
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.$122K
proposed penalties
$113K
current assessed
$95K
paid to date
$18K
outstanding
369 assessments are final orders; 5 contested dockets.
As of the most recent assessment on 2026-04-02.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Top causes
- SLIP OR FALL OF PERSON 2 non-fatal
- HANDLING OF MATERIALS 1 non-fatal
- POWERED HAULAGE 1 non-fatal
Incident timeline
2020
1
2008
1
2007
1
2006
1
Mines on record
- Dewey Plant AZ
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The full compliance file on MDI Mining
A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.