# Relationship history for MSHA mine 1102600

Current hierarchy: **Adams Resources & Energy Inc → Morris Coal Inc → Morris Mine No 7**

- 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:** Parton Coal Company → Morris Mine No 7; 1977-06-01 to 1978-02-15; source msha-controller-operator-history
- **controller_controls_mine:** United Energies Inc → Morris Mine No 7; 1977-06-01 to 1978-02-15; source msha-controller-operator-history
- **controller_controls_operator:** United Energies Inc → Parton Coal Company; 1977-06-01 to 1978-02-15; source msha-controller-operator-history
- **operator_operates_mine:** Morris Coal Inc → Morris Mine No 7; 1978-02-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Adams Resources & Energy Inc → Morris Mine No 7; 1978-02-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adams Resources & Energy Inc → Morris Coal Inc; 1978-02-16 to current/open; source msha-controller-operator-history