# Relationship history for MSHA mine 1513106

Current hierarchy: **Anderson Charles → Scratch Back Coal Company Inc → No 1**

- 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:** Burgess David → No 1; 1981-01-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** L M B River Coal Company Inc → No 1; 1981-09-01 to 1982-02-16; source msha-controller-operator-history
- **controller_controls_operator:** Burgess David → L M B River Coal Company Inc; 1981-09-01 to 1982-02-16; source msha-controller-operator-history
- **operator_operates_mine:** Four J Mining Company → No 1; 1982-02-17 to 1985-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Adkins Clifford → No 1; 1982-02-17 to 1985-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Adkins Clifford → Four J Mining Company; 1982-02-17 to 1985-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Scratch Back Coal Company Inc → No 1; 1985-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Anderson Charles → No 1; 1985-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anderson Charles → Scratch Back Coal Company Inc; 1985-10-01 to current/open; source msha-controller-operator-history