Data / Mines / Puerto Rico / Cantera Roca Dura Inc
Cantera Roca Dura Inc: 27 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Cantera Roca Dura Inc is an active crushed, broken stone surface mine in Manati County, Puerto Rico, operated by Cantera Roca Dura LLC with 7 employees on MSHA's record (mine ID 5400404). Since January 1, 2022 MSHA inspectors issued 27 citations and orders there with $7,564 in proposed penalties, and 0 accident reports were filed there, with no injury or illness cases.
The request: Watch Cantera Roca Dura Inc (MSHA mine ID 5400404) in Manati County, Puerto Rico: each new citation and each accident report. $10 of work on sign-up, no card.
SpecStream is the live web data engine for teams and agents. It reads the mine, citation, inspection and accident files that MSHA publishes, and this page is that reading. Ask for the mines of a commodity, state or operator with the operator's headquarters, website and size added from the web, and new mines, new citations and new accident reports arrive in your sheet, CRM, Slack or agent as MSHA posts them.
- MSHA mine ID
- 5400404
- Status
- Active since April 28, 2026
- Main commodity
- Crushed, broken stone
- Mine type
- Surface
- County
- Manati County, Puerto Rico
- Nearest town
- Manati
- Operator
- Cantera Roca Dura LLC
- Employees
- 7
- MSHA field office
- San Juan PR Field Office
- Citations and orders since January 1, 2022
- 27
- Significant and substantial
- 5 (18.5%)
- Closure orders
- 0
- High negligence or reckless
- 6
- Proposed penalties
- $7,564
- Amount paid so far
- $7,564
- Inspections
- 21
- Inspector hours on site
- 117
- Citations per inspection
- 1.29 (all mines 2.30)
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
- Latest MSHA record
- April 24, 2026
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 | 12 | 3 | $2,685 | 0 |
| 2023 | 7 | 1 | $3,689 | 0 |
| 2024 | 8 | 1 | $1,190 | 0 |
Standards cited most at Cantera Roca Dura Inc
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 56.14107 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.11002 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14103 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 1 |
| 30 CFR 62.120 | Occupational noise exposure | 1 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 1 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 1 |
| 30 CFR 56.4400 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 1 |
Other open mines in Manati County, Puerto Rico
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Cantera Espinosa | Argos Puerto Rico Corp | Manati County, PR | Cement | 50 | 60 |
| Cantera Mundo Real | Empresas Mundo Real Inc | Manati County, PR | Crushed, broken limestone | 14 | 31 |
| Cantera Vega Baja | Productora De Agregados Inc | Manati County, PR | Crushed, broken traprock | 31 | 17 |
| Nuestra Senora Del Carmen | Cantera Carmelo Inc | Manati County, PR | Crushed, broken limestone | 22 | 13 |
| Cantera Dorado | Dorado Quarry and Recycling Corp | Manati County, PR | Crushed, broken limestone | 11 | 13 |
| Gravero Rodriguez, Manati | Transporte Rodriguez Asfalto, Inc. | Manati County, PR | Construction sand and gravel | 7 | 13 |
| San Lorenzo Mine, Inc. | San Lorenzo Mine, Inc. | Manati County, PR | Construction sand and gravel | 3 | 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.