# Relationship history for MSHA mine 1515375

Current hierarchy: **Petot William-Walter C Slone → Action Energies Inc → Stillhouse 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

- **controller_controls_mine:** Petot William-Walter C Slone Et Al → Stillhouse Mine; 1979-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Action Energies Inc → Stillhouse Mine; 1985-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Petot William-Walter C Slone Et Al → Action Energies Inc; 1985-09-01 to current/open; source msha-controller-operator-history