# Relationship history for MSHA mine 4502967

Current hierarchy: **Pacific Coast Coal Company Inc; Franklin Energy LLC → Pacific Coast Coal Company → John Henry No 1 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:** Pacific Coast Coal Company → John Henry No 1 Mine; 1982-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pacific Coast Coal Company Inc et al → John Henry No 1 Mine; 1982-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pacific Coast Coal Company Inc et al → Pacific Coast Coal Company; 1982-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Franklin Energy LLC et al → Pacific Coast Coal Company; 1982-07-01 to current/open; source msha-controller-operator-history