# Relationship history for MSHA mine 1512470

Current hierarchy: **Collier Jack → Pine Coal Corp → No2**

- 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:** Collier Jack → No2; 1972-05-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hunsaker James Larry & Gary Russell → No2; 1976-01-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jackson Roy Dan → No2; 1977-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cardinal Resources Inc → No2; 1978-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cardinal Resources Inc → No2; 1980-08-01 to 1980-12-18; source msha-controller-operator-history
- **controller_controls_operator:** Cardinal Resources Inc → Cardinal Resources Inc; 1980-08-01 to 1980-12-18; source msha-controller-operator-history
- **operator_operates_mine:** Hunsaker Coal Company → No2; 1980-12-19 to 1981-01-08; source msha-controller-operator-history
- **controller_controls_operator:** Hunsaker James Larry & Gary Russell → Hunsaker Coal Company; 1980-12-19 to 1981-01-08; source msha-controller-operator-history
- **operator_operates_mine:** South Harlan Coal Company Inc → No2; 1981-01-09 to 1986-06-10; source msha-controller-operator-history
- **controller_controls_operator:** Jackson Roy Dan → South Harlan Coal Company Inc; 1981-01-09 to 1986-06-10; source msha-controller-operator-history
- **operator_operates_mine:** Aniline Derivative Resources Inc → No2; 1986-06-11 to 1986-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Staton Randy → No2; 1986-06-11 to 1986-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Staton Randy → Aniline Derivative Resources Inc; 1986-06-11 to 1986-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Pine Coal Corp → No2; 1987-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Collier Jack → Pine Coal Corp; 1987-01-01 to current/open; source msha-controller-operator-history