# Relationship history for MSHA mine 1519392

Current hierarchy: **U S Coal Corporation → Fox Knob Coal Co. Inc. → Highwall Miner #64**

- 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

- **controller_controls_mine:** Carl E  McAfee et al → Highwall Miner #64; 1984-07-01 to 2008-04-17; source msha-controller-operator-history
- **controller_controls_mine:** U S Coal Corporation → Highwall Miner #64; 2008-04-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Fox Knob Coal Co. Inc. → Highwall Miner #64; 2009-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** U S Coal Corporation → Fox Knob Coal Co. Inc.; 2009-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carl E  McAfee et al → Fox Knob Coal Co. Inc.; 2009-03-12 to 2008-04-17; source msha-controller-operator-history
- **controller_controls_operator:** Aubra P  Dean et al → Fox Knob Coal Co. Inc.; 2009-03-12 to 2008-04-17; source msha-controller-operator-history