# Relationship history for MSHA mine 3606299

Current hierarchy: **Troup Warren C → M A T A Coal Company → Burnside Slope**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** D & M Coal Company → Burnside Slope; 1976-12-01 to 1981-05-26; source msha-controller-operator-history
- **controller_controls_mine:** Moroz Daniel A → Burnside Slope; 1976-12-01 to 1981-05-26; source msha-controller-operator-history
- **controller_controls_operator:** Moroz Daniel A → D & M Coal Company; 1976-12-01 to 1981-05-26; source msha-controller-operator-history
- **operator_operates_mine:** M A T A Coal Company → Burnside Slope; 1981-05-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Troup Warren C Et Al → Burnside Slope; 1981-05-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Troup Warren C Et Al → M A T A Coal Company; 1981-05-27 to current/open; source msha-controller-operator-history