# Relationship history for MSHA mine 4605558

Current hierarchy: **Wolfe Boyd → Wolfe Contracting 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

- **controller_controls_mine:** Callison Dale → No 1 Mine; 1976-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lynn Dale Coal Company Inc → No 1 Mine; 1977-01-01 to 1981-07-27; source msha-controller-operator-history
- **controller_controls_operator:** Callison Dale → Lynn Dale Coal Company Inc; 1977-01-01 to 1981-07-27; source msha-controller-operator-history
- **controller_controls_mine:** Miller Louis T & Kevin → No 1 Mine; 1979-10-01 to 1981-08-16; source msha-controller-operator-history
- **operator_operates_mine:** L & K Miller Coal Inc → No 1 Mine; 1981-07-28 to 1981-08-16; source msha-controller-operator-history
- **controller_controls_operator:** Miller Louis T & Kevin → L & K Miller Coal Inc; 1981-07-28 to 1981-08-16; source msha-controller-operator-history
- **operator_operates_mine:** Lynn Dale Coal Company Inc → No 1 Mine; 1981-08-17 to 1983-05-09; source msha-controller-operator-history
- **controller_controls_operator:** Callison Dale → Lynn Dale Coal Company Inc; 1981-08-17 to 1983-05-09; source msha-controller-operator-history
- **operator_operates_mine:** Zenore Inc → No 1 Mine; 1983-05-10 to 1983-06-06; source msha-controller-operator-history
- **controller_controls_mine:** Mc Million Virgil → No 1 Mine; 1983-05-10 to 1983-06-06; source msha-controller-operator-history
- **controller_controls_operator:** Mc Million Virgil → Zenore Inc; 1983-05-10 to 1983-06-06; source msha-controller-operator-history
- **operator_operates_mine:** Lynn Dale Coal Company Inc → No 1 Mine; 1983-06-07 to 1985-09-09; source msha-controller-operator-history
- **controller_controls_operator:** Callison Dale → Lynn Dale Coal Company Inc; 1983-06-07 to 1985-09-09; source msha-controller-operator-history
- **operator_operates_mine:** Lynn Dale Coal Company → No 1 Mine; 1985-09-10 to 1986-01-21; source msha-controller-operator-history
- **controller_controls_mine:** Mills James R → No 1 Mine; 1985-09-10 to 1986-01-21; source msha-controller-operator-history
- **controller_controls_operator:** Mills James R → Lynn Dale Coal Company; 1985-09-10 to 1986-01-21; source msha-controller-operator-history
- **operator_operates_mine:** Marie Enterprises Inc → No 1 Mine; 1986-01-22 to 1986-05-09; source msha-controller-operator-history
- **controller_controls_mine:** Simpson Herbert Gaston → No 1 Mine; 1986-01-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Simpson Herbert Gaston → Marie Enterprises Inc; 1986-01-22 to 1986-05-09; source msha-controller-operator-history
- **operator_operates_mine:** Wolfe Contracting Inc → No 1 Mine; 1986-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Wolfe Boyd → No 1 Mine; 1986-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wolfe Boyd → Wolfe Contracting Inc; 1986-05-10 to current/open; source msha-controller-operator-history