Data / Mines / Puerto Rico / Ponce County
Mines in Ponce County, Puerto Rico: 8 open mines
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
MSHA lists 8 open mines in Ponce County, Puerto Rico, run by 8 operators and employing 140 people. Since January 1, 2022 its inspectors issued 148 citations and orders there with $61,224 in proposed penalties, and operators reported 13 injury or illness cases. The operators with the most open mines are Cemex De Puerto Rico; Cantera Puerto Ven, Inc; Cantera Robles, Inc.. Data from MSHA, November 6, 2026.
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- Open mines
- 8
- Operators
- 8
- Employees
- 140
- Active
- 8
- Mines run by individuals, counted and not listed
- 2
- Citations and orders since January 1, 2022
- 148
- Significant and substantial
- 33 (22.3%)
- Closure orders
- 6
- High negligence or reckless
- 14
- Proposed penalties
- $61,224
- Amount paid so far
- $41,927
- Inspections
- 194
- Inspector hours on site
- 998
- Citations per inspection
- 0.76 (all mines 2.30)
- Accident reports
- 13
- Injury and illness cases
- 13
- Fatalities
- 0
- Latest MSHA record
- October 20, 2026
Operators with the most open mines in Ponce County, Puerto Rico
Ranked by open mines, then by citations. Sole proprietors and individuals are not listed.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Cemex De Puerto Rico | 1 | 109 | 49 | $40,527 | 8 |
| Cantera Puerto Ven, Inc | 1 | 2 | 29 | $8,129 | 0 |
| Cantera Robles, Inc. | 1 | 5 | 18 | $3,788 | 2 |
| Cantera Adjuntas , Inc. | 1 | 4 | 16 | $2,995 | 0 |
| Robles Aggregates Inc | 1 | 7 | 9 | $1,317 | 0 |
| Logistic Aggregates LLC. | 1 | 7 | 2 | $302 | 0 |
Operators with the most citations in Ponce County, Puerto Rico
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Cemex De Puerto Rico | 1 | 109 | 49 | $40,527 | 8 |
| Cantera Puerto Ven, Inc | 1 | 2 | 29 | $8,129 | 0 |
| Cantera Robles, Inc. | 1 | 5 | 18 | $3,788 | 2 |
| Cantera Adjuntas , Inc. | 1 | 4 | 16 | $2,995 | 0 |
| Robles Aggregates Inc | 1 | 7 | 9 | $1,317 | 0 |
| Logistic Aggregates LLC. | 1 | 7 | 2 | $302 | 0 |
Mines with the most citations
Open mines, ranked by citations and orders since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Ponce Cement Plant | Cemex De Puerto Rico | Ponce County, PR | Cement | 109 | 49 |
| Cantera Puerto Ven | Cantera Puerto Ven, Inc | Ponce County, PR | Crushed, broken stone | 2 | 29 |
| Cantera Robles | Cantera Robles, Inc. | Ponce County, PR | Crushed, broken limestone | 5 | 18 |
| Cantera Adjuntas | Cantera Adjuntas , Inc. | Ponce County, PR | Crushed, broken stone | 4 | 16 |
| Gravero Coto Laurel | Robles Aggregates Inc | Ponce County, PR | Construction sand and gravel | 7 | 9 |
| Logistic Aggregates LLC. | Logistic Aggregates LLC. | Ponce County, PR | Sand, common | 7 | 2 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Crushed, broken stone | 3 | 37.5% |
| Construction sand and gravel | 2 | 25% |
| Cement | 1 | 12.5% |
| Crushed, broken limestone | 1 | 12.5% |
| Sand, common | 1 | 12.5% |
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 | 26 | 10 | $17,903 | 2 |
| 2023 | 38 | 7 | $18,973 | 4 |
| 2024 | 39 | 9 | $13,034 | 4 |
| 2025 | 26 | 6 | $6,225 | 1 |
| 2026 | 19 | 1 | $5,089 | 2 |
Standards cited most at mines in Ponce County, Puerto Rico
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 | 36 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 6 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 6 |
| 30 CFR 56.14130 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.14103 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14131 | Surface metal and nonmetal mines | 3 |
| 30 CFR 46.5 | Training at sand, gravel and surface stone mines | 3 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.18010 | Surface metal and nonmetal mines | 3 |
Injury and illness cases at mines in Ponce County, Puerto Rico
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 11 |
| No lost time, or an occupational illness | 2 |
What the accident reports at mines in Ponce County, Puerto Rico describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 5 |
| Slip or fall of person | 4 |
| Nonpowered haulage | 1 |
| Other | 1 |
| Handtools (nonpowered) | 1 |
| Machinery | 1 |
Equipment named in accident reports at mines in Ponce County, Puerto Rico
| Equipment | Reports |
|---|---|
| Machine | 1 |
| Shovel | 1 |
| Hand tools (not powered) | 1 |
| Ore haulage trucks - off highway trucks | 1 |
| Crusher | 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.