The Quartz Corp USA operator
Controlled by
Imerys S A; Norsk Mineral AS
MSHA operator ID: L18340
- Fatalities
- 0
- Total incidents
- 51
- Mines on record
- 3
- Years on record
- 2001–2026
Compliance record
MSHA citations since 2001
429
citations
95
significant & substantial
$176,983
proposed penalties
$149,593
paid to date
85% of proposed penalties paid to date, a $27,390 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2001
282
inspections on record
5,952
inspection hours
7.2
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.429 citations across 5,952 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.$177K
proposed penalties
$150K
current assessed
$150K
paid to date
$151
outstanding
415 assessments are final orders; 11 contested dockets.
As of the most recent assessment on 2026-01-14.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Top causes
- HANDLING OF MATERIALS 24 non-fatal
- SLIP OR FALL OF PERSON 9 non-fatal
- HANDTOOLS (NONPOWERED) 6 non-fatal
- MACHINERY 5 non-fatal
- OTHER 3 non-fatal
- POWERED HAULAGE 2 non-fatal
Incident timeline
2026
1
2025
2
2024
1
2023
4
2022
3
2021
1
2020
6
2019
3
2018
3
2017
1
2015
2
2014
3
2013
1
2011
1
2010
2
2009
5
2008
4
2004
1
2003
3
2002
1
2001
3
Mines on record
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The full compliance file on The Quartz Corp USA
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.