# Relationship history for MSHA mine 0102164

Current hierarchy: **Box Scott → Prescott & Sons Coal Company Inc → 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

- **operator_operates_mine:** Wheeler Hollow Coal Company Inc → No 1 Mine; 1979-12-01 to 1980-05-27; source msha-controller-operator-history
- **controller_controls_mine:** Key Lannie-Danny & Chris → No 1 Mine; 1979-12-01 to 1980-05-27; source msha-controller-operator-history
- **controller_controls_operator:** Key Lannie-Danny & Chris → Wheeler Hollow Coal Company Inc; 1979-12-01 to 1980-05-27; source msha-controller-operator-history
- **operator_operates_mine:** Wheeler Hollow Coal Company Inc → No 1 Mine; 1980-05-28 to 1980-11-20; source msha-controller-operator-history
- **controller_controls_mine:** Prescott John → No 1 Mine; 1980-05-28 to 1980-11-20; source msha-controller-operator-history
- **controller_controls_operator:** Prescott John → Wheeler Hollow Coal Company Inc; 1980-05-28 to 1980-11-20; source msha-controller-operator-history
- **operator_operates_mine:** Wheeler Hollow Coal Company Inc → No 1 Mine; 1980-11-21 to 1982-08-13; source msha-controller-operator-history
- **controller_controls_mine:** Holder Leroy & William T Allen → No 1 Mine; 1980-11-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Holder Leroy & William T Allen → Wheeler Hollow Coal Company Inc; 1980-11-21 to 1982-08-13; source msha-controller-operator-history
- **operator_operates_mine:** Prescott & Sons Coal Company Inc → No 1 Mine; 1982-08-14 to 1986-04-14; source msha-controller-operator-history
- **controller_controls_mine:** Prescott Robert → No 1 Mine; 1982-08-14 to 1986-04-14; source msha-controller-operator-history
- **controller_controls_operator:** Prescott Robert → Prescott & Sons Coal Company Inc; 1982-08-14 to 1986-04-14; source msha-controller-operator-history
- **operator_operates_mine:** Mebco Inc → No 1 Mine; 1986-04-15 to 1987-04-09; source msha-controller-operator-history
- **controller_controls_mine:** Earl Jerry W → No 1 Mine; 1986-04-15 to 1987-04-09; source msha-controller-operator-history
- **controller_controls_operator:** Earl Jerry W → Mebco Inc; 1986-04-15 to 1987-04-09; source msha-controller-operator-history
- **operator_operates_mine:** Prescott & Sons Coal Company Inc → No 1 Mine; 1987-04-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Box Scott → No 1 Mine; 1987-04-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Box Scott → Prescott & Sons Coal Company Inc; 1987-04-10 to current/open; source msha-controller-operator-history