# Relationship history for MSHA mine 3002472

Current hierarchy: **Barbara  Penaluna; Richard  Penaluna → Chas-Dick Quarries Company → Pine Island 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:** John Dalyrmple → Pine Island Quarry; 1980-03-01 to 1982-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Dalrymple John → Pine Island Quarry; 1980-03-01 to 1982-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Dalrymple John → John Dalyrmple; 1980-03-01 to 1982-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Chas-Dick Quarries Company → Pine Island Quarry; 1982-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Barbara  Penaluna et al → Pine Island Quarry; 1982-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barbara  Penaluna et al → Chas-Dick Quarries Company; 1982-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Penaluna et al → Chas-Dick Quarries Company; 1982-10-01 to current/open; source msha-controller-operator-history