# Relationship history for MSHA mine 1506807

Current hierarchy: **Adams Ralph A → Kasu Coal Company → No 1 Mine**

- 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:** Branham Billy T → No 1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mullins Estill → No 1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Little & Mullins Coal Company Inc → No 1 Mine; 1973-01-01 to 1977-10-25; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Estill → Little & Mullins Coal Company Inc; 1973-01-01 to 1977-10-25; source msha-controller-operator-history
- **operator_operates_mine:** Buckarue Coal Company Inc → No 1 Mine; 1977-10-26 to 1978-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Jones Harry C → No 1 Mine; 1977-10-26 to 1978-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Jones Harry C → Buckarue Coal Company Inc; 1977-10-26 to 1978-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Buckarue Coal Company Inc → No 1 Mine; 1979-01-01 to 1979-05-14; source msha-controller-operator-history
- **controller_controls_mine:** Dixon Frank → No 1 Mine; 1979-01-01 to 1979-05-14; source msha-controller-operator-history
- **controller_controls_operator:** Dixon Frank → Buckarue Coal Company Inc; 1979-01-01 to 1979-05-14; source msha-controller-operator-history
- **operator_operates_mine:** B J & C Coal Sales Inc → No 1 Mine; 1979-05-15 to 1979-11-29; source msha-controller-operator-history
- **controller_controls_operator:** Branham Billy T → B J & C Coal Sales Inc; 1979-05-15 to 1979-11-29; source msha-controller-operator-history
- **operator_operates_mine:** Puckett & Puckett Coal Company → No 1 Mine; 1979-11-30 to 1980-05-27; source msha-controller-operator-history
- **controller_controls_mine:** Puckett Carl & Leslie → No 1 Mine; 1979-11-30 to 1980-05-27; source msha-controller-operator-history
- **controller_controls_operator:** Puckett Carl & Leslie → Puckett & Puckett Coal Company; 1979-11-30 to 1980-05-27; source msha-controller-operator-history
- **controller_controls_mine:** Salyers Larry → No 1 Mine; 1980-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Big Bass Fuel Inc → No 1 Mine; 1980-05-28 to 1984-11-18; source msha-controller-operator-history
- **controller_controls_operator:** Salyers Larry → Big Bass Fuel Inc; 1980-05-28 to 1984-11-18; source msha-controller-operator-history
- **operator_operates_mine:** Log Hollow Mining Inc → No 1 Mine; 1984-11-19 to 1985-07-28; source msha-controller-operator-history
- **controller_controls_mine:** Wellman Layton → No 1 Mine; 1984-11-19 to 1986-10-19; source msha-controller-operator-history
- **controller_controls_operator:** Wellman Layton → Log Hollow Mining Inc; 1984-11-19 to 1985-07-28; source msha-controller-operator-history
- **operator_operates_mine:** H & B Coal Company Inc → No 1 Mine; 1985-07-29 to 1987-03-17; source msha-controller-operator-history
- **controller_controls_mine:** Owens Paul B → No 1 Mine; 1985-07-29 to 1987-03-17; source msha-controller-operator-history
- **controller_controls_operator:** Owens Paul B → H & B Coal Company Inc; 1985-07-29 to 1987-03-17; source msha-controller-operator-history
- **operator_operates_mine:** Kasu Coal Company → No 1 Mine; 1987-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Adams Ralph A Et Al → No 1 Mine; 1987-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adams Ralph A Et Al → Kasu Coal Company; 1987-03-18 to current/open; source msha-controller-operator-history