Data / Mines / Master Products Corp
Master Products Corp: 1 open mine, 52 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Master Products Corp (MSHA operator ID L09852) operates 1 open mine with 30 employees in Puerto Rico, mostly crushed, broken sandstone. Since January 1, 2022 MSHA inspectors issued it 52 citations and orders with $29,827 in proposed penalties, and it reported 14 injury or illness cases. Data from MSHA, November 6, 2026.
The request: Watch Master Products Corp (MSHA operator ID L09852): each new citation, each accident report and each new mine. $10 of work on sign-up, no card.
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- MSHA operator ID
- L09852
- Open mines
- 1
- Employees at open mines
- 30
- States
- Puerto Rico
- Citations and orders since January 1, 2022
- 52
- Significant and substantial
- 18 (34.6%)
- Closure orders
- 3
- High negligence or reckless
- 1
- Proposed penalties
- $29,827
- Amount paid so far
- $18,026
- Inspections
- 53
- Inspector hours on site
- 374
- Citations per inspection
- 0.98 (all mines 2.30)
- Accident reports
- 14
- Injury and illness cases
- 14
- Fatalities
- 0
- Latest MSHA record
- July 15, 2026
Open mines of Master Products Corp
Ranked by citations since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Quikrete | Master Products Corp | Bayamon County, PR | Crushed, broken sandstone | 30 | 52 |
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2022 | 11 | 6 | $5,782 | 4 |
| 2023 | 13 | 2 | $9,352 | 5 |
| 2024 | 16 | 6 | $6,903 | 1 |
| 2025 | 10 | 3 | $6,089 | 1 |
| 2026 | 2 | 1 | $1,701 | 3 |
Standards cited most at Master Products Corp
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.14130 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14109 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 2 |
| 30 CFR 46.7 | Training at sand, gravel and surface stone mines | 2 |
| 30 CFR 56.12016 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.16005 | Surface metal and nonmetal mines | 2 |
| 30 CFR 62.120 | Occupational noise exposure | 2 |
| 30 CFR 46.11 | Training at sand, gravel and surface stone mines | 1 |
Injury and illness cases at Master Products Corp
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 12 |
| No lost time, or an occupational illness | 2 |
What the accident reports at Master Products Corp describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 4 |
| Powered haulage | 3 |
| Slip or fall of person | 3 |
| Stepping or kneeling on object | 1 |
| Handtools (nonpowered) | 1 |
| Machinery | 1 |
| Other | 1 |
Equipment named in accident reports at Master Products Corp
| Equipment | Reports |
|---|---|
| Forklift | 3 |
| Hand tools (not powered) | 2 |
| Front-end loader | 1 |
| Packaging machine | 1 |
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.