Mining Incidents

PORTABLE UNIT #1: 68 MSHA citations Metal/Non-Metal

Sterling, Whiteside County, IL  ·  Intermittent
MSHA Mine ID: 1102384

PORTABLE UNIT #1 has $8K 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
0
Years on record
Latest incident
Compliance record
MSHA citations since 2000
68
citations
8
significant & substantial
$8,397
proposed penalties
$8,397
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
35
inspections on record
416
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: 416 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

PORTABLE UNIT #1 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
68 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-11-24.
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.
11.8%
significant & substantial
13.2%
high negligence or reckless
11.8%
reasonably likely or greater
35.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 22.1% low, 64.7% moderate, 13.2% 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: 2015-10-06, 10 years ago
0%
of limit-tested samples over the exposure limit
2
samples
1
limit-tested
Most sampled contaminants
  • Nuisance dust, respirable, <1% Qtz1
  • Respirable dust, <.1mg1
Show the individual readings (2)
Date Contaminant Concentration Limit Conc / limit Occupation
2015-10-06 Respirable dust, <.1mg 0 Front-end Loader Operator
2015-10-06 Nuisance dust, respirable, <1% Qtz 0.16 10 0.02 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.
Ownership history
  1. Nelson Sand & Gravel Company 1950 to 1995
  2. Alliance Materials Inc 1995 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 2
2025 2
2024 2
2023 2
2022 2
2021 2
2020 2
2019 2
2018 2
2017 2
2016 2
2015 2
2014 2
2013 2
2008 2
2007 2
2006 2
2005 2
2004 2
2003 3
2002 2
2001 2
2000 3
Source: MSHA quarterly employment and production, updated weekly.

PORTABLE UNIT #1 sits in Whiteside County, Illinois, 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.
Whiteside County, Illinois · Population 55,192
0.2%
Mining share of county employment
$64,536
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 561 0 0 0.0
2026 Q1 82 0 0 0.0
2025 Q4 692 3 1 4335.3
2025 Q3 542 0 0 0.0
2025 Q2 618 0 0 0.0
2024 Q4 618 0 0 0.0
2024 Q3 512 0 0 0.0
2024 Q2 623 0 0 0.0
Show 77 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q1 376 0 0 0.0
2023 Q4 655 0 0 0.0
2023 Q3 535 0 0 0.0
2023 Q2 576 0 0 0.0
2023 Q1 315 0 0 0.0
2022 Q4 627 2 0 3189.8
2022 Q3 547 0 0 0.0
2022 Q2 561 1 0 1782.5
2022 Q1 346 0 0 0.0
2021 Q4 615 0 0 0.0
2021 Q3 712 1 0 1404.5
2021 Q2 536 0 0 0.0
2021 Q1 235 0 0 0.0
2020 Q4 625 0 0 0.0
2020 Q3 813 4 1 4920.0
2020 Q2 618 0 0 0.0
2020 Q1 174 0 0 0.0
2019 Q4 592 0 0 0.0
2019 Q3 856 3 2 3504.7
2019 Q2 635 0 0 0.0
2019 Q1 155 0 0 0.0
2018 Q4 736 0 0 0.0
2018 Q3 816 1 0 1225.5
2018 Q2 768 0 0 0.0
2018 Q1 576 0 0 0.0
2017 Q4 593 0 0 0.0
2017 Q3 684 0 0 0.0
2017 Q2 786 0 0 0.0
2017 Q1 209 0 0 0.0
2016 Q4 852 2 0 2347.4
2016 Q3 921 0 0 0.0
2016 Q2 831 0 0 0.0
2016 Q1 185 0 0 0.0
2015 Q4 942 1 0 1061.6
2015 Q3 968 1 0 1033.1
2015 Q2 765 0 0 0.0
2015 Q1 326 0 0 0.0
2014 Q4 721 2 0 2773.9
2014 Q3 865 0 0 0.0
2014 Q2 782 3 0 3836.3
2014 Q1 361 0 0 0.0
2013 Q4 989 0 0 0.0
2008 Q3 1,029 0 0 0.0
2008 Q2 1,021 0 0 0.0
2008 Q1 632 0 0 0.0
2007 Q4 1,006 0 0 0.0
2007 Q3 1,025 0 0 0.0
2007 Q2 962 0 0 0.0
2007 Q1 1,008 0 0 0.0
2006 Q4 984 0 0 0.0
2006 Q3 1,016 0 0 0.0
2006 Q2 1,022 0 0 0.0
2006 Q1 1,043 0 0 0.0
2005 Q4 938 0 0 0.0
2005 Q3 1,121 2 0 1784.1
2005 Q2 1,016 0 0 0.0
2005 Q1 893 0 0 0.0
2004 Q4 1,024 0 0 0.0
2004 Q3 1,299 0 0 0.0
2004 Q2 1,096 0 0 0.0
2004 Q1 1,044 0 0 0.0
2003 Q4 504 0 0 0.0
2003 Q3 1,094 0 0 0.0
2003 Q2 1,648 14 1 8495.1
2003 Q1 2,183 0 0 0.0
2002 Q4 1,256 0 0 0.0
2002 Q3 1,190 0 0 0.0
2002 Q2 1,317 0 0 0.0
2002 Q1 1,572 0 0 0.0
2001 Q4 1,132 0 0 0.0
2001 Q3 1,192 5 1 4194.6
2001 Q2 1,151 0 0 0.0
2001 Q1 1,024 0 0 0.0
2000 Q4 1,131 1 0 884.2
2000 Q3 1,827 3 2 1642.0
2000 Q2 984 0 0 0.0
2000 Q1 1,678 0 0 0.0

No reportable incidents on file.

MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.