# Relationship history for MSHA mine 1512096

Current hierarchy: **Dennis Allen  Ramey → United Fuels 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

- **operator_operates_mine:** Triple Jr Coal Company Inc → No 1; 1979-10-01 to 1987-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Epling James Jr & Millard Coleman Jr → No 1; 1979-10-01 to 1987-05-19; source msha-controller-operator-history
- **controller_controls_operator:** Epling James Jr & Millard Coleman Jr → Triple Jr Coal Company Inc; 1979-10-01 to 1987-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Huston Hubert → No 1; 1984-06-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sharp Coal Company Inc → No 1; 1987-05-20 to 1987-09-08; source msha-controller-operator-history
- **controller_controls_operator:** Huston Hubert → Sharp Coal Company Inc; 1987-05-20 to 1987-09-08; source msha-controller-operator-history
- **operator_operates_mine:** United Fuels Inc → No 1; 1987-09-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dennis Allen  Ramey → No 1; 1987-09-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dennis Allen  Ramey → United Fuels Inc; 1987-09-09 to current/open; source msha-controller-operator-history