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Data / Mines / Stoneworld

Stoneworld: 1 open mine, 42 MSHA citations

Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.

Stoneworld (MSHA operator ID L17166) operates 1 open mine with 5 employees in Arizona, mostly construction sand and gravel. Since January 1, 2022 MSHA inspectors issued it 42 citations and orders with $52,185 in proposed penalties, and it reported no injury or illness cases. Data from MSHA, November 6, 2026.

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MSHA operator ID
L17166
Open mines
1
Employees at open mines
5
States
Arizona
Citations and orders since January 1, 2022
42
Significant and substantial
15 (35.7%)
Closure orders
5
High negligence or reckless
12
Proposed penalties
$52,185
Amount paid so far
$51,029
Inspections
21
Inspector hours on site
88
Citations per inspection
2.00 (all mines 2.30)
Accident reports
0
Injury and illness cases
0
Fatalities
0
Latest MSHA record
May 27, 2026

Open mines of Stoneworld

Ranked by citations since January 1, 2022.

MineOperatorCountyMain commodityEmployeesCitations since 2022
Mayer OnyxStoneworldYavapai County, AZConstruction sand and gravel542

Citations and injury cases by year

Calendar years since 2022; 2026 runs to the date of the MSHA files.

YearCitations and ordersSignificant and substantialProposed penaltiesInjury and illness cases
202290$1,1970
20232814$46,1680
202420$8430
202521$3,8260
202610$1510

Standards cited most at Stoneworld

Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.

StandardWhat the part coversCitations
30 CFR 56.4201Surface metal and nonmetal mines4
30 CFR 56.9300Surface metal and nonmetal mines4
30 CFR 56.14100Surface metal and nonmetal mines3
30 CFR 56.20011Surface metal and nonmetal mines3
30 CFR 56.14132Surface metal and nonmetal mines2
30 CFR 56.14103Surface metal and nonmetal mines2
30 CFR 56.6132Surface metal and nonmetal mines2
30 CFR 56.18002Surface metal and nonmetal mines2
30 CFR 56.12032Surface metal and nonmetal mines2
30 CFR 56.12028Surface metal and nonmetal mines1
30 CFR 56.14101Surface metal and nonmetal mines1
30 CFR 56.20003Surface metal and nonmetal mines1
30 CFR 56.14107Surface metal and nonmetal mines1
30 CFR 56.3130Surface metal and nonmetal mines1
30 CFR 56.16003Surface metal and nonmetal mines1

US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.