Mining Incidents

Construx Aggregates: 69 MSHA citations Metal/Non-Metal

Calportland · Surface
Controlled by Taiheiyo Cement Corp
boulder city, Clark County, NV  ·  Abandoned
MSHA Mine ID: 2602322

Construx Aggregates has $36K in proposed MSHA penalties and $0 outstanding across 2 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
8
Years on record
2000–2004
Latest incident
Sep 2004
Compliance record
MSHA citations since 2000
69
citations
18
significant & substantial
$35,566
proposed penalties
$30,306
paid to date
85% of proposed penalties paid to date, a $5,260 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
31
inspections on record
543
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: 543 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Construx Aggregates has $36K in proposed MSHA penalties and $0 outstanding across 2 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.
$36K
proposed penalties
$30K
current assessed
$30K
paid to date
$0
outstanding
69 assessments are final orders; 2 contested dockets.
Of $33K in penalties contested before the Commission, $25K was upheld in final decisions.
As of the most recent assessment on 2011-01-06.
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.
26.1%
significant & substantial
10.1%
high negligence or reckless
23.2%
reasonably likely or greater
58.0%
permanently disabling or fatal if injury occurs
Negligence coding: 4.3% none, 4.3% low, 81.2% moderate, 10.1% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Contested penalties
A reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.
Largest penalties this mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
Docket Decision Judge Year Proposed / upheld
WEST20020560M Settlement Weisberger 2003 $27K → $22K
WEST20030056M Settlement Weisberger 2003 $6K → $2K
Source: FMSHRC civil penalty dockets and decisions (public record), 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: 2010-01-20, 16 years ago
0%
of limit-tested samples over the exposure limit
11
samples
2
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg7
  • Quartz, respirable, >1% Qtz2
  • Unlisted Particulate, respirable, <1% Qtz2
Show the individual readings (11)
Date Contaminant Concentration Limit Conc / limit Occupation
2010-01-20 Respirable dust, <.1mg 0 Front-end Loader Operator
2010-01-20 Quartz, respirable, >1% Qtz 0.21 2.05 0.10 Laborer, Bullgang
2009-04-23 Respirable dust, <.1mg 0 Front-end Loader Operator
2009-04-23 Unlisted Particulate, respirable, <1% Qtz 0.24 Laborer, Bullgang
2009-04-23 Respirable dust, <.1mg 0 Front-end Loader Operator
2004-11-30 Unlisted Particulate, respirable, <1% Qtz 0.22 Laborer, Bullgang
2004-11-30 Respirable dust, <.1mg 0 Front-end Loader Operator
2001-07-03 Respirable dust, <.1mg 0 Truck Driver
2001-07-03 Respirable dust, <.1mg 0 Crusher Oper/Worker
2001-07-03 Respirable dust, <.1mg 0 Front-end Loader Operator
2001-07-03 Quartz, respirable, >1% Qtz 0.29 1.36 0.21 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.

Construx Aggregates recorded 0.00 reportable injury cases per 100 full-time workers in 2010.

Injury rate, 2010
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 2.68 and the all-US-mining average was 3.20 cases per 100 workers.
In Nevada, metal and nonmetal mining averaged 2.26 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
2010 * 0.00 0.00 0.000
2009 * 0.00 0.00 0.000
2008 * 0.00 0.00 0.000
2007 * 0.00 0.00 0.000
2006 * 0.00 0.00 0.000
2005 * 0.00 0.00 0.000
2004 * 16.32 5.44 0.000
2003 * 5.82 5.82 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. Construx Excavators 1997 to 1998
  2. Silver State Materials Corp 1998 to 2006
  3. Silver State Materials 2006 to 2008
  4. Calportland 2009 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2011 9
2010 10
2009 12
2008 14
2007 16
2006 19
2005 17
2004 15
2003 13
2002 12
2001 11
2000 10
Source: MSHA quarterly employment and production, updated weekly.

Construx Aggregates sits in Clark County, Nevada, where the Census mining category is 0.2% 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.
Clark County, Nevada · Population 2,293,764
0.2%
Mining share of county employment
$73,845
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
2011 Q1 3,671 1 0 272.4
2010 Q4 5,370 0 0 0.0
2010 Q3 5,241 0 0 0.0
2010 Q2 4,635 1 0 215.7
2010 Q1 5,452 3 0 550.3
2009 Q4 5,900 0 0 0.0
2009 Q3 5,825 0 0 0.0
2009 Q2 5,895 3 2 508.9
Show 37 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2009 Q1 7,314 0 0 0.0
2008 Q4 7,541 0 0 0.0
2008 Q3 7,549 2 0 264.9
2008 Q2 8,141 0 0 0.0
2008 Q1 8,789 4 0 455.1
2007 Q4 8,443 0 0 0.0
2007 Q3 8,435 4 0 474.2
2007 Q2 9,156 0 0 0.0
2007 Q1 9,461 6 0 634.2
2006 Q4 11,162 0 0 0.0
2006 Q3 11,872 0 0 0.0
2006 Q2 10,946 0 0 0.0
2006 Q1 11,266 0 0 0.0
2005 Q4 10,570 1 0 94.6
2005 Q3 11,255 0 0 0.0
2005 Q2 10,270 1 0 97.4
2005 Q1 9,426 0 0 0.0
2004 Q4 8,326 16 2 1921.7
2004 Q3 9,421 1 0 106.1
2004 Q2 9,447 0 0 0.0
2004 Q1 9,573 0 0 0.0
2003 Q4 10,460 0 0 0.0
2003 Q3 7,532 3 3 398.3
2003 Q2 8,476 0 0 0.0
2003 Q1 7,924 2 0 252.4
2002 Q4 6,720 0 0 0.0
2002 Q3 5,818 0 0 0.0
2002 Q2 6,173 12 10 1943.9
2002 Q1 6,510 0 0 0.0
2001 Q4 6,193 2 0 322.9
2001 Q3 6,337 1 0 157.8
2001 Q2 6,717 0 0 0.0
2001 Q1 5,517 0 0 0.0
2000 Q4 4,828 2 1 414.3
2000 Q3 5,189 0 0 0.0
2000 Q2 5,423 0 0 0.0
2000 Q1 6,212 4 0 643.9
No fatalities recorded at this mine.

Reportable incidents

8 on file

2004 · 3 incidents

September 14, 2004 NV · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Silver State Materials Corp · Struck by... (Not Elsewhere Classified)

While changing screens on plant #1 two employees were prying a clamp rail when the bar slipped striking one above the eye.

September 8, 2004 NV · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Silver State Materials Corp · Caught in, under or between (Not Elsewhere Classified)

While prying on a blow bar inside the hsi. the ban slipped smashing his right middle finger tip.

August 23, 2004 NV · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
Silver State Materials Corp · Fall down stairs

Walking down the tower steps after starting the plant and slipped falling onto his back side.

2003 · 1 incident

July 8, 2003 NV · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Silver State Materials Corp · Struck by flying object

WHILE HOOKING UP THE PRESSURE WASHER TRAILER TO THE SHOP TRUCK, THE JACK PIN STUCK. EMPLOYEE ATTEMPTED TO FREE IT WITH A HAMMER BUT HIT THE EDGE OF THE TRAILER CAUSING A SMALL PIECE OF STEEL T O FLY OFF AND INTO HIS HAND CUTTING IT AND EMBEDDING DEEP INTO THE PALM OF HIS LEFT HAND.

2002 · 1 incident

April 15, 2002 NV · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Silver State Materials Corp · Caught in, under or between (Not Elsewhere Classified)

BELT # 7 WAS SLIPPING AND EE CLIMBED OUT ON THE CONVEYER TO APPLY BELT DRESSING ONTO THE HEAD PULLEY. EE THEN CALLED ON THE RADIO TO START THE CONVEYER. OTHER EE CALLED EACH EE TO MAKE SURE TH EY WERE CLEAR AND ALL REPLIED. HE STARTED CONVEYER, AND INJURED PLACED HIS HAND IN THE PULLEY WHILE IT WAS RUNNING.

2001 · 2 incidents

July 9, 2001 NV · Metal/Non-Metal mine manager, mine foreman, mine owner HANDLING OF MATERIALS
Silver State Materials Corp · Struck by falling object

WHILE TRANSPORTING SCREEN MEDIA TO THE PLANT FOR REPLACEMENT, A SCREEN FELL OFF THE STAGIN AREA AND DROPPED ABOUT 2' ONTO 33'S RIGHT INDEX FINGER.

June 29, 2001 NV · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator OTHER
Silver State Materials Corp · Unclassified, insufficient data

EMPLOYEE COMPLAINED OF A PINCHED MUSCLE IN HIS BACK. AFTER GOING TO THE DOCTOR HE REPORTED TO ME THAT A NERVE WAS BEING PINCHED BY A DISK IN HIS SPINE. I AM NOR SURE IF THIS HAPPENED AT WORK O R NOT.

2000 · 1 incident

January 20, 2000 NV · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Silver State Materials Corp · Struck by... (Not Elsewhere Classified)

TWO EE WERE CLEANING OUT A MATERIAL SLIDE CHUTE WITH A 4 FOOT BAR. THE BAR APON IMPACT WITH THE CHUTE, BOUNCED BACK STRIKING THE SECOND EE IN THE RIGHT EYEBROW. THE CUT WAS APPROX 1" LONG.