Rainbow Valley Plant has $10K in proposed MSHA penalties and $6K 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 Rainbow Valley Plant.
Fatalities
0
Total incidents
2
Years on record
2008
Latest incident
Jun 2008
Compliance record
MSHA citations since 2007
36
citations
12
significant & substantial
$9,615
proposed penalties
$3,762
paid to date
39% of proposed penalties paid to date, a $5,853 gap.
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: 132 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Rainbow Valley Plant has $10K in proposed MSHA penalties and $6K 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.
$10K
proposed penalties
$10K
current assessed
$4K
paid to date
$6K
outstanding
36 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2010-03-16.
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.
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: 2007-06-20, 19 years ago
0%
of limit-tested samples over the exposure limit
9
samples
8
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz8
Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (9)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2007-06-20
Unlisted Particulate, respirable, <1% Qtz
0.5
Mechanic
2007-06-20
Quartz, respirable, >1% Qtz
0.35
1.46
0.24
Mechanic
2007-06-20
Quartz, respirable, >1% Qtz
0.24
1.52
0.16
Dry Screen Plant Operator
2007-06-20
Quartz, respirable, >1% Qtz
0.2
1.16
0.17
Electrician
2007-06-20
Quartz, respirable, >1% Qtz
0.44
1.43
0.31
Dry Screen Plant Operator
2007-06-20
Quartz, respirable, >1% Qtz
0.72
1.25
0.58
Lab Technician
2007-06-20
Quartz, respirable, >1% Qtz
0.48
1.46
0.33
Dry Screen Plant Operator
2007-06-20
Quartz, respirable, >1% Qtz
0.66
1.7
0.39
Scraper Operator
2007-06-20
Quartz, respirable, >1% Qtz
0.4
0.92
0.43
Building Repair/Maint.
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.
Rainbow Valley Plant recorded 10.76 reportable injury cases per 100 full-time workers in 2008.
Injury rate, 2008
ⓘ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.
10.76
total case rate
10.76
days-away rate
0.000
fatality rate
Above average. The US metal and nonmetal mining average was 3.15 and the all-US-mining average was 3.61 cases per 100 workers.
In Arizona, metal and nonmetal mining averaged 3.99 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.
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2010
2
2009
4
2008
18
2007
16
Source: MSHA quarterly employment and production, updated weekly.
Rainbow Valley Plant sits in Maricopa County, Arizona, 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.
Maricopa County, Arizona · Population 4,491,987
0.2%
Mining share of county employment
$85,518
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
2010 Q1
960
1
0
1041.7
2009 Q4
880
0
0
0.0
2009 Q3
1,041
0
0
0.0
2009 Q2
1,098
0
0
0.0
2009 Q1
3,521
9
3
2556.1
2008 Q4
7,773
0
0
0.0
2008 Q3
10,797
3
2
277.9
2008 Q2
9,067
0
0
0.0
Show 4 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2008 Q1
9,548
8
1
837.9
2007 Q4
7,782
0
0
0.0
2007 Q3
7,544
0
0
0.0
2007 Q2
1,722
14
5
8130.1
No fatalities recorded at this mine.
Reportable incidents
2 on file
2008 · 2 incidents
June 30, 2008AZ · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techSLIP OR FALL OF PERSON
The employee was on a platfrom 9 ft high helping another employee when he said he "forgot where he was at," stepped backwards and fell to the lower deck. As he hit the ground all of his weight went into his right leg breaking it in 2 places and crushing his heel bone. As he fell he injured his left bicep with 3 scratches and bruising.
March 21, 2008AZ · Metal/Non-Metaloutside foreman, leadmanPOWERED HAULAGE
EE was driving a Komatsu 400 haul truck. He went around as bend in the road and hit the right berm which cause the truck to jerk to the left side of the road and over the berm into the desert. He received 5 staples in his head, 4 stitches on nose, abrassion on forehead, concussion,left hip & right knee bruising and was confused pain and bleeding after the accident.