Keystone Quarry Inc operator
Controlled by
L & D Management Inc
MSHA operator ID: L16920
- Fatalities
- 0
- Total incidents
- 22
- Mines on record
- 1
- Years on record
- 2004–2025
Compliance record
MSHA citations since 2004
115
citations
30
significant & substantial
$25,136
proposed penalties
$17,581
paid to date
70% of proposed penalties paid to date, a $7,555 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2004
62
inspections on record
1,289
inspection hours
8.9
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.115 citations across 1,289 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.$25K
proposed penalties
$25K
current assessed
$18K
paid to date
$8K
outstanding
114 assessments are final orders; 1 contested dockets.
As of the most recent assessment on 2026-03-03.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Top causes
- SLIP OR FALL OF PERSON 6 non-fatal
- HANDLING OF MATERIALS 5 non-fatal
- HANDTOOLS (NONPOWERED) 5 non-fatal
- POWERED HAULAGE 2 non-fatal
- IGNITION OR EXPLOSION OF GAS OR DUST 1 non-fatal
- MACHINERY 1 non-fatal
Incident timeline
2025
1
2022
2
2020
1
2019
1
2017
1
2015
1
2013
1
2012
1
2011
1
2010
1
2009
1
2008
2
2007
2
2006
1
2005
3
2004
2
Mines on record
Watch this operator
Email me when a new MSHA incident is filed at any Keystone Quarry Inc mine.
For insurers, brokers, and safety consultants
The full compliance file on Keystone Quarry Inc
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.