Western Mobile Northern Inc · Struck by falling object
RAISING INTAKE BOX, A BOLT FAILED, BOX FELL, HITTING FOREARM AND KNEE.
Northern Portable Plant #4: 18 MSHA citations Metal/Non-Metal
Martin Marietta Materials
· Surface
Controlled by
Martin Marietta Materials Inc
Devner,
Larimer County,
CO
·
Abandoned
MSHA Mine ID: 0504320
Northern Portable Plant #4 has $5K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 5
- Years on record
- 1996–2001
- Latest incident
- Jan 2001
Compliance record
MSHA citations since 2000
18
citations
5
significant & substantial
$5,449
proposed penalties
$5,449
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
22
inspections on record
231
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: 231 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Northern Portable Plant #4 has $5K 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.$5K
proposed penalties
$5K
current assessed
$5K
paid to date
$0
outstanding
18 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2014-08-11.
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.27.8%
significant & substantial
27.8%
high negligence or reckless
27.8%
reasonably likely or greater
55.6%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 11.1% low, 61.1% moderate, 27.8% 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: 2014-09-03, 11 years ago
ⓘ
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.13%
of limit-tested samples over the exposure limit
11
samples
8
limit-tested
Most sampled contaminants
- Quartz, respirable, >1% Qtz81 over
- Respirable dust, <.1mg3
Show the individual readings (11)
| Date | Contaminant | Concentration | Limit | Conc / limit | Occupation |
|---|---|---|---|---|---|
| 2014-07-24 | Quartz, respirable, >1% Qtz | 1.78 | 0.45 | 3.96 | Washer Operator |
| 2014-09-03 | Quartz, respirable, >1% Qtz | 0.22 | 0.38 | 0.58 | Washer Operator |
| 2014-07-24 | Quartz, respirable, >1% Qtz | 0.33 | 2.19 | 0.15 | Front-end Loader Operator |
| 2013-04-03 | Quartz, respirable, >1% Qtz | 0.14 | 0.93 | 0.15 | Utility Man |
| 2013-04-03 | Quartz, respirable, >1% Qtz | 0.25 | 0.75 | 0.33 | Washer Operator |
| 2013-04-03 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2010-04-28 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2010-04-28 | Quartz, respirable, >1% Qtz | 0.13 | 0.59 | 0.22 | Washer Operator |
| 2006-07-27 | Quartz, respirable, >1% Qtz | 0.17 | 0.97 | 0.18 | Cleanup Man |
| 2006-07-27 | Respirable dust, <.1mg | 0 | Washer Operator | ||
| 2002-08-08 | Quartz, respirable, >1% Qtz | 0.16 | 1.06 | 0.15 | Supervisor, Co. Official |
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.
Ownership history
- Plains Aggregate Company 1988 to 1989
- Western-Mobile Northern Inc 1989 to 1998
- Western Mobile Northern Inc 1998 to 2002
- Lafarge West Incorporated 2002 to 2011
- Martin Marietta Materials 2011 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
| Year | Employees |
|---|---|
| 2016 | 0 |
| 2015 | 0 |
| 2014 | 2 |
| 2013 | 3 |
| 2012 | 3 |
| 2011 | 2 |
| 2010 | 2 |
| 2009 | 2 |
| 2008 | 2 |
| 2007 | 1 |
| 2006 | 2 |
| 2005 | 3 |
| 2004 | 0 |
| 2003 | 2 |
| 2002 | 2 |
| 2001 | 3 |
| 2000 | 4 |
Source: MSHA quarterly employment and production, updated weekly.
Northern Portable Plant #4 sits in Larimer County, Colorado, where the Census mining category is 0.6% 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.Larimer County, Colorado · Population 363,561
0.6%
Mining share of county employment
$91,364
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 |
|---|---|---|---|---|
| 2016 Q1 | 0 | 0 | 0 | |
| 2015 Q4 | 0 | 0 | 0 | |
| 2015 Q3 | 0 | 0 | 0 | |
| 2015 Q2 | 0 | 0 | 0 | |
| 2015 Q1 | 0 | 0 | 0 | |
| 2014 Q4 | 816 | 0 | 0 | 0.0 |
| 2014 Q3 | 756 | 4 | 3 | 5291.0 |
| 2014 Q2 | 449 | 0 | 0 | 0.0 |
Show 51 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2014 Q1 | 79 | 0 | 0 | 0.0 |
| 2013 Q4 | 663 | 0 | 0 | 0.0 |
| 2013 Q3 | 617 | 0 | 0 | 0.0 |
| 2013 Q2 | 1,128 | 1 | 0 | 886.5 |
| 2013 Q1 | 367 | 0 | 0 | 0.0 |
| 2012 Q4 | 293 | 0 | 0 | 0.0 |
| 2012 Q3 | 994 | 1 | 0 | 1006.0 |
| 2012 Q2 | 846 | 3 | 0 | 3546.1 |
| 2012 Q1 | 93 | 0 | 0 | 0.0 |
| 2011 Q4 | 336 | 0 | 0 | 0.0 |
| 2011 Q3 | 92 | 0 | 0 | 0.0 |
| 2011 Q2 | 448 | 0 | 0 | 0.0 |
| 2011 Q1 | 0 | 0 | 0 | |
| 2010 Q4 | 248 | 1 | 0 | 4032.3 |
| 2010 Q3 | 282 | 0 | 0 | 0.0 |
| 2010 Q2 | 986 | 1 | 0 | 1014.2 |
| 2010 Q1 | 275 | 0 | 0 | 0.0 |
| 2009 Q4 | 96 | 1 | 0 | 10416.7 |
| 2009 Q3 | 275 | 0 | 0 | 0.0 |
| 2009 Q2 | 376 | 0 | 0 | 0.0 |
| 2009 Q1 | 0 | 0 | 0 | |
| 2008 Q4 | 637 | 0 | 0 | 0.0 |
| 2008 Q3 | 899 | 0 | 0 | 0.0 |
| 2008 Q2 | 1,169 | 0 | 0 | 0.0 |
| 2008 Q1 | 0 | 0 | 0 | |
| 2007 Q2 | 0 | 0 | 0 | |
| 2007 Q1 | 1,428 | 0 | 0 | 0.0 |
| 2006 Q4 | 1,639 | 1 | 0 | 610.1 |
| 2006 Q3 | 2,087 | 1 | 0 | 479.2 |
| 2006 Q2 | 1,192 | 0 | 0 | 0.0 |
| 2006 Q1 | 0 | 0 | 0 | |
| 2005 Q4 | 1,294 | 0 | 0 | 0.0 |
| 2005 Q3 | 1,342 | 0 | 0 | 0.0 |
| 2005 Q2 | 1,305 | 0 | 0 | 0.0 |
| 2004 Q1 | 0 | 0 | 0 | |
| 2003 Q4 | 636 | 0 | 0 | 0.0 |
| 2003 Q3 | 1,296 | 0 | 0 | 0.0 |
| 2003 Q2 | 263 | 0 | 0 | 0.0 |
| 2003 Q1 | 0 | 0 | 0 | |
| 2002 Q4 | 0 | 0 | 0 | |
| 2002 Q3 | 1,803 | 0 | 0 | 0.0 |
| 2002 Q2 | 1,893 | 0 | 0 | 0.0 |
| 2002 Q1 | 1,032 | 0 | 0 | 0.0 |
| 2001 Q4 | 1,382 | 0 | 0 | 0.0 |
| 2001 Q3 | 1,199 | 0 | 0 | 0.0 |
| 2001 Q2 | 1,557 | 0 | 0 | 0.0 |
| 2001 Q1 | 1,156 | 3 | 1 | 2595.2 |
| 2000 Q4 | 1,395 | 0 | 0 | 0.0 |
| 2000 Q3 | 2,246 | 0 | 0 | 0.0 |
| 2000 Q2 | 2,035 | 0 | 0 | 0.0 |
| 2000 Q1 | 1,522 | 1 | 1 | 657.0 |
No fatalities recorded at this mine.
Reportable incidents
5 on file2001 · 1 incident
2000 · 2 incidents
September 5, 2000
CO · Metal/Non-Metal
mine manager, mine foreman, mine owner
SLIP OR FALL OF PERSON
Western Mobile Northern Inc · Fall to lower level, (Not Elsewhere Classified)
WALKING, STEPPED IN A HOLE, TWISTED ANKLE AND FELL ON WRIST.
Western Mobile Northern Inc · Struck by... (Not Elsewhere Classified)
REMOVING PUMP FROM UNDER WASH PLANT, STEEL RAIL PUMP SECTION STARTED TO TIP OVER, TRIED TO STOP IT, BROKE WRIST. XRAY POSITIVE/CAST.
1996 · 2 incidents
October 31, 1996
CO · Metal/Non-Metal
greaser, grease man, oiler, lube man, dragline oiler
HANDTOOLS (NONPOWERED)
Western-Mobile Northern Inc · Struck by... (Not Elsewhere Classified)
CUTTING A PIECE OF RUBBER WITH KNIFE, KNIFE SLIPPED & CUT LEG [1 STITCH]
March 29, 1996
CO · Metal/Non-Metal
bulldozer operator, universal operator, heavy equipment operator, operating engineer
HANDTOOLS (NONPOWERED)
Western-Mobile Northern Inc · Struck by... (Not Elsewhere Classified)
CUT LEG WHILE CUTTING RUBBER BELTING WITH UTILITY KNIFE.