# Relationship history for MSHA mine 3700211

Current hierarchy: **Antonia  Armetta → Armetta LLC → Armetta LLC - Bradford Quarry**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Copar Industries, LLC → Armetta LLC - Bradford Quarry; 2010-12-01 to 2014-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Randal S  Roberge et al → Armetta LLC - Bradford Quarry; 2010-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randal S  Roberge et al → Copar Industries, LLC; 2010-12-01 to 2014-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Samuel F  Cocopard et al → Copar Industries, LLC; 2010-12-01 to 2014-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Armetta LLC → Armetta LLC - Bradford Quarry; 2014-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Antonia  Armetta → Armetta LLC - Bradford Quarry; 2014-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Antonia  Armetta → Armetta LLC; 2014-07-01 to current/open; source msha-controller-operator-history