Mining Incidents
Search Operators Mines Alerts Research Controllers Fatalgrams About
Countries
Peru Chile
English Español
← Back to search

ROCKHOUSE QUARRY: 53 MSHA citations Metal/Non-Metal

Controlled by Harley Gray Jr
DRAKE, Yavapai County, AZ  ·  Active
MSHA Mine ID: 0202742

ROCKHOUSE QUARRY has $8K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

Watch this mine

Email me when a new MSHA incident is filed at ROCKHOUSE QUARRY.

Fatalities
0
Total incidents
20
Years on record
2001–2018
Latest incident
Apr 2018
Compliance record
MSHA citations since 2001
53
citations
15
significant & substantial
$7,814
proposed penalties
$7,814
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Drake Stone Products, Inc's full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
54
inspections on record
592
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: 592 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

ROCKHOUSE QUARRY has $8K in proposed MSHA penalties and $0 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.
$8K
proposed penalties
$8K
current assessed
$8K
paid to date
$0
outstanding
52 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-03-02.
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.
28.3%
significant & substantial
3.8%
high negligence or reckless
28.3%
reasonably likely or greater
41.5%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 5.7% low, 90.6% moderate, 3.8% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
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.

Metal and nonmetal contaminants (personal samples)
ⓘ Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.

Last sampled: 2026-06-23
7%
of limit-tested samples over the exposure limit
21
samples
14
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz141 over
  • Respirable dust, <.1mg7
Show the individual readings (21)
Date Contaminant Concentration Limit Conc / limit Occupation
2005-11-15 Quartz, respirable, >1% Qtz 0.31 0.22 1.41 Bulldozer Operator
2026-06-23 Quartz, respirable, >1% Qtz 0.2 0.41 0.49 Utility Man
2026-06-23 Quartz, respirable, >1% Qtz 0.31 0.47 0.66 Front-end Loader Operator
2024-04-24 Quartz, respirable, >1% Qtz 0.22 0.28 0.79 Cutting Mach Operator
2024-04-24 Quartz, respirable, >1% Qtz 0.27 0.56 0.48 Front-end Loader Operator
2024-04-24 Quartz, respirable, >1% Qtz 0.22 0.6 0.37 Front-end Loader Operator
2024-04-24 Quartz, respirable, >1% Qtz 0.17 0.38 0.45 Stone Polisher/Cutter
2019-03-19 Respirable dust, <.1mg 0 Stone Polisher/Cutter
2019-03-19 Respirable dust, <.1mg 0 Stone Polisher/Cutter
2019-03-19 Respirable dust, <.1mg 0 Stone Polisher/Cutter
2019-03-19 Respirable dust, <.1mg 0 Stone Polisher/Cutter
2016-02-17 Quartz, respirable, >1% Qtz 0.14 0.77 0.18 Front-end Loader Operator
2016-02-17 Respirable dust, <.1mg 0 Stone Polisher/Cutter
2016-02-17 Quartz, respirable, >1% Qtz 0.12 0.36 0.33 Shovel Operator
2009-10-29 Quartz, respirable, >1% Qtz 0.14 0.44 0.32 Backhoe Operator
2009-10-29 Respirable dust, <.1mg 0 Laborer, Bullgang
2009-10-29 Quartz, respirable, >1% Qtz 0.19 0.52 0.37 Front-end Loader Operator
2006-07-26 Quartz, respirable, >1% Qtz 0.13 0.54 0.24 Bulldozer Operator
2005-11-15 Quartz, respirable, >1% Qtz 0.16 0.29 0.55 Rotary Bucket Ex. Operator
2005-11-15 Quartz, respirable, >1% Qtz 0.13 0.43 0.30 Forklift Operator
2005-11-15 Respirable dust, <.1mg 0 Front-end Loader Operator
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.

ROCKHOUSE QUARRY recorded 0.00 reportable injury cases per 100 full-time workers in 2025.

Injury rate, 2025
ⓘ 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
Below average. The US metal and nonmetal mining average was 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In Arizona, metal and nonmetal mining averaged 1.81 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
2025 * 0.00 0.00 0.000
2024 * 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
2019 * 0.00 0.00 0.000
2018 * 5.27 5.27 0.000
2017 * 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. Drake Stone Products, Inc 1997 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 14
2025 14
2024 14
2023 18
2022 19
2021 13
2020 17
2019 19
2018 24
2017 27
2016 24
2015 30
2014 26
2013 23
2012 30
2011 33
2010 29
2009 30
2008 39
2007 48
2006 50
2005 46
2004 45
2003 49
2002 44
2001 50
2000 48
Source: MSHA quarterly employment and production, updated weekly.

ROCKHOUSE QUARRY sits in Yavapai County, Arizona, where the Census mining category is 1.2% 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.
Yavapai County, Arizona · Population 241,656
1.2%
Mining share of county employment
$66,106
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 7,280 1 0 137.4
2026 Q1 7,281 1 0 137.3
2025 Q4 6,840 0 0 0.0
2025 Q3 7,280 0 0 0.0
2025 Q2 7,800 0 0 0.0
2025 Q1 5,280 2 0 378.8
2024 Q4 7,280 0 0 0.0
2024 Q3 6,240 0 0 0.0
Show 97 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 7,280 1 0 137.4
2024 Q1 8,320 1 0 120.2
2023 Q4 7,920 2 1 252.5
2023 Q2 9,360 0 0 0.0
2023 Q1 7,200 0 0 0.0
2022 Q4 7,200 0 0 0.0
2022 Q3 8,640 0 0 0.0
2022 Q2 9,360 0 0 0.0
2022 Q1 10,400 0 0 0.0
2021 Q4 6,160 0 0 0.0
2021 Q3 7,280 0 0 0.0
2021 Q2 6,912 0 0 0.0
2021 Q1 4,320 0 0 0.0
2020 Q4 6,080 0 0 0.0
2020 Q3 8,316 0 0 0.0
2020 Q2 9,216 0 0 0.0
2020 Q1 4,800 0 0 0.0
2019 Q4 5,280 0 0 0.0
2019 Q3 7,800 0 0 0.0
2019 Q2 11,960 0 0 0.0
2019 Q1 12,480 0 0 0.0
2018 Q4 11,520 0 0 0.0
2018 Q3 11,440 0 0 0.0
2018 Q2 2,480 0 0 0.0
2018 Q1 12,480 0 0 0.0
2017 Q4 12,480 0 0 0.0
2017 Q3 16,120 0 0 0.0
2017 Q2 14,560 3 2 206.0
2017 Q1 11,440 0 0 0.0
2016 Q4 10,560 0 0 0.0
2016 Q3 11,440 4 3 349.7
2016 Q2 12,480 0 0 0.0
2016 Q1 14,560 5 3 343.4
2015 Q4 19,584 0 0 0.0
2015 Q3 21,216 1 0 47.1
2015 Q2 16,128 0 0 0.0
2015 Q1 11,520 0 0 0.0
2014 Q4 12,000 0 0 0.0
2014 Q3 15,552 0 0 0.0
2014 Q2 12,480 2 0 160.3
2014 Q1 9,600 1 0 104.2
2013 Q4 12,000 0 0 0.0
2013 Q3 8,320 0 0 0.0
2013 Q2 8,640 6 2 694.4
2013 Q1 6,656 0 0 0.0
2012 Q4 8,448 0 0 0.0
2012 Q3 11,200 0 0 0.0
2012 Q2 3,640 0 0 0.0
2012 Q1 10,368 0 0 0.0
2011 Q4 8,928 0 0 0.0
2011 Q3 15,360 4 0 260.4
2011 Q2 15,840 0 0 0.0
2011 Q1 13,248 0 0 0.0
2010 Q4 7,200 0 0 0.0
2010 Q3 12,648 0 0 0.0
2010 Q2 13,440 1 1 74.4
2010 Q1 11,520 0 0 0.0
2009 Q4 11,520 1 0 86.8
2009 Q3 8,064 0 0 0.0
2009 Q2 15,360 2 0 130.2
2009 Q1 11,040 0 0 0.0
2008 Q4 11,904 0 0 0.0
2008 Q3 19,680 0 0 0.0
2008 Q2 14,880 0 0 0.0
2008 Q1 24,960 0 0 0.0
2007 Q4 24,000 0 0 0.0
2007 Q3 25,440 0 0 0.0
2007 Q2 22,080 0 0 0.0
2007 Q1 20,160 1 0 49.6
2006 Q4 22,080 0 0 0.0
2006 Q3 24,480 0 0 0.0
2006 Q2 24,480 1 0 40.8
2006 Q1 24,480 0 0 0.0
2005 Q4 28,320 3 2 105.9
2005 Q3 13,920 0 0 0.0
2005 Q2 22,080 0 0 0.0
2005 Q1 24,480 0 0 0.0
2004 Q4 16,800 0 0 0.0
2004 Q3 30,680 0 0 0.0
2004 Q2 20,496 3 0 146.4
2004 Q1 24,024 0 0 0.0
2003 Q4 26,112 0 0 0.0
2003 Q3 36,036 0 0 0.0
2003 Q2 30,888 0 0 0.0
2003 Q1 2,015 0 0 0.0
2002 Q4 12,056 5 1 414.7
2002 Q3 25,920 0 0 0.0
2002 Q2 33,072 1 0 30.2
2002 Q1 16,640 0 0 0.0
2001 Q4 16,800 0 0 0.0
2001 Q3 30,888 0 0 0.0
2001 Q2 29,952 1 0 33.4
2001 Q1 26,400 0 0 0.0
2000 Q4 18,480 0 0 0.0
2000 Q3 29,640 0 0 0.0
2000 Q2 39,168 0 0 0.0
2000 Q1 15,600 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

20 on file

2018 · 1 incident

April 6, 2018 AZ · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Drake Stone Products, Inc · Fall to the walkway or working surface

Employee was moving a stone and turned away and as ee turned right knee popped and ee fell to the ground

2014 · 1 incident

October 22, 2014 AZ · Metal/Non-Metal stone finishing and sizing personnel, stone/rock cut/polish/saw operator, splitter, cutter, trimmer SLIP OR FALL OF PERSON
Drake Stone Products, Inc · Fall onto or against objects

While leaving a work area to clear mine site for blasting employee stumbled and slid down a slope striking his head on a rock surface knocking his hard hat off and cutting his scalp

2013 · 1 incident

January 3, 2013 AZ · Metal/Non-Metal stone finishing and sizing personnel, stone/rock cut/polish/saw operator, splitter, cutter, trimmer HANDLING OF MATERIALS
Drake Stone Products, Inc · Struck by... (Not Elsewhere Classified)

a piece of stone struck the employee on the arm

2012 · 1 incident

October 18, 2012 AZ · Metal/Non-Metal stone finishing and sizing personnel, stone/rock cut/polish/saw operator, splitter, cutter, trimmer MACHINERY
Drake Stone Products, Inc · Struck by falling object

The employee was splitting rock when a piece of stone fell on his leg

2011 · 2 incidents

March 23, 2011 AZ · Metal/Non-Metal stone finishing and sizing personnel, stone/rock cut/polish/saw operator, splitter, cutter, trimmer HANDLING OF MATERIALS
Drake Stone Products, Inc · Over-exertion in lifting objects

Lifting large piece of stone hurt his stomach.

January 19, 2011 AZ · Metal/Non-Metal stone finishing and sizing personnel, stone/rock cut/polish/saw operator, splitter, cutter, trimmer HANDLING OF MATERIALS
Drake Stone Products, Inc · Struck by... (Not Elsewhere Classified)

EE was gathering stone and dropped a piece of stone on his toe.

2008 · 2 incidents

March 7, 2008 AZ · Metal/Non-Metal stone finishing and sizing personnel, stone/rock cut/polish/saw operator, splitter, cutter, trimmer HANDLING OF MATERIALS
Drake Stone Products, Inc · Over-exertion in lifting objects

A hernia to left side of abdomen occurred when lifting and splitting stone.

2006 · 1 incident

July 10, 2006 AZ · Metal/Non-Metal stone finishing and sizing personnel, stone/rock cut/polish/saw operator, splitter, cutter, trimmer HANDTOOLS (NONPOWERED)
Drake Stone Products, Inc · Struck by... (Not Elsewhere Classified)

The rock splitter was using a hammer and chisle to split rock, he missed the chisle and smashed his finger.

2005 · 1 incident

April 7, 2005 AZ · Metal/Non-Metal stone finishing and sizing personnel, stone/rock cut/polish/saw operator, splitter, cutter, trimmer HANDLING OF MATERIALS
Drake Stone Products, Inc · Struck by... (Not Elsewhere Classified)

PIECE OF ROCK FELL ON LEG WHILE SPLITTING ROCK. WAS PUTTING A ROCK ON A PALLET & THE ROCK FELL. NOI AND HOW ACCIDENT HAPPENED PER CALL TO ALECIA CLIFFORD 4/29/05 MB

2004 · 1 incident

April 20, 2004 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Drake Stone Products, Inc · Struck by falling object

HARVESTING ROCK, ROCK FELL AND SMASHED HIS FINGER.

2003 · 2 incidents

2002 · 2 incidents

2001 · 5 incidents

January 27, 2001 AZ · Metal/Non-Metal mine manager, mine foreman, mine owner HANDLING OF MATERIALS
Drake Stone Products, Inc · Over-exertion (Not Elsewhere Classified)

HURT BACK 10 YRS AGO WHEN WORKING FOR WESTERN STATES NOV OR DEC. JUST WENT BACK TO MEXICO FOR REST & RECUPERATE REINJURED JUMPING OFF & ON TRUCKS & LIFTING. BROUGHT 10 YR OLD XRAYS FROM MEXICO. NO CLAIM WAS MADE AGAINST HIS EMPLOYER AT THAT TIME. EE STARTED WITH US 10/99 AS A FOREMAN IN THE ROCKHOUSE QUARRY. HE & HIS BROTHER WERE CALLED BACK TO MEXICO DUE TO ILLNESS IN THE F