# Relationship history for MSHA mine 1510454

Current hierarchy: **Mullins Dale → Mullins & Sons Coal Company Inc → No 2 Tipple**

- 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:** Mullins Dale Et Al → No 2 Tipple; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J A C Energy Coal Company → No 2 Tipple; 1977-06-01 to 1978-09-21; source msha-controller-operator-history
- **controller_controls_mine:** Kimberlain Larry - Robert Whitley & Charles Deaton → No 2 Tipple; 1977-06-01 to 1978-09-21; source msha-controller-operator-history
- **controller_controls_operator:** Kimberlain Larry - Robert Whitley & Charles Deaton → J A C Energy Coal Company; 1977-06-01 to 1978-09-21; source msha-controller-operator-history
- **controller_controls_mine:** Biliter Franklin → No 2 Tipple; 1978-08-15 to 1981-09-24; source msha-controller-operator-history
- **operator_operates_mine:** Ramada Coal Inc → No 2 Tipple; 1978-09-22 to 1981-09-24; source msha-controller-operator-history
- **controller_controls_operator:** Biliter Franklin → Ramada Coal Inc; 1978-09-22 to 1981-09-24; source msha-controller-operator-history
- **operator_operates_mine:** Mullins & Sons Coal Company Inc → No 2 Tipple; 1981-09-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Dale Et Al → Mullins & Sons Coal Company Inc; 1981-09-25 to current/open; source msha-controller-operator-history