# Relationship history for MSHA mine 2602715

Current hierarchy: **Jerry  Pankow → Reclaimation Mining → Triple Sevens Mine**

- 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:** Reclaimation Mining → Triple Sevens Mine; 2012-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jerry  Pankow → Triple Sevens Mine; 2012-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry  Pankow → Reclaimation Mining; 2012-03-15 to current/open; source msha-controller-operator-history