# Relationship history for MSHA mine 1513496

Current hierarchy: **Wagers Dewey → Little John Coal Company Inc → #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:** Chaney John → #1 Mine; 1979-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mc Ghee Jack Et Al → #1 Mine; 1982-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Quick Silver Mining Inc → #1 Mine; 1982-05-01 to 1983-10-02; source msha-controller-operator-history
- **controller_controls_operator:** Mc Ghee Jack Et Al → Quick Silver Mining Inc; 1982-05-01 to 1983-10-02; source msha-controller-operator-history
- **operator_operates_mine:** Chaney Creek Coal Corp → #1 Mine; 1983-10-03 to 1984-03-11; source msha-controller-operator-history
- **controller_controls_operator:** Chaney John → Chaney Creek Coal Corp; 1983-10-03 to 1984-03-11; source msha-controller-operator-history
- **operator_operates_mine:** Mc Kee Enterprises → #1 Mine; 1984-03-12 to 1984-09-18; source msha-controller-operator-history
- **controller_controls_mine:** Mc Kee Jack → #1 Mine; 1984-03-12 to 1984-09-18; source msha-controller-operator-history
- **controller_controls_operator:** Mc Kee Jack → Mc Kee Enterprises; 1984-03-12 to 1984-09-18; source msha-controller-operator-history
- **operator_operates_mine:** Pixie Coal Company Inc → #1 Mine; 1984-09-19 to 1985-05-13; source msha-controller-operator-history
- **controller_controls_mine:** Mc Ghee Jack → #1 Mine; 1984-09-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Ghee Jack → Pixie Coal Company Inc; 1984-09-19 to 1985-05-13; source msha-controller-operator-history
- **operator_operates_mine:** Little John Coal Company Inc → #1 Mine; 1985-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Wagers Dewey → #1 Mine; 1985-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wagers Dewey → Little John Coal Company Inc; 1985-05-14 to current/open; source msha-controller-operator-history