# Relationship history for MSHA mine 4606144

Current hierarchy: **Belisle Wayne T → Solitaire Coal Corp 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:** Little Valley Mining Inc → No 1 Mine; 1980-02-01 to 1982-07-19; source msha-controller-operator-history
- **controller_controls_mine:** Dotson Boody → No 1 Mine; 1980-02-01 to 1982-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Dotson Boody → Little Valley Mining Inc; 1980-02-01 to 1982-07-19; source msha-controller-operator-history
- **controller_controls_mine:** Belisle Wayne T → No 1 Mine; 1981-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Solitaire Coal Corp Inc → No 1 Mine; 1982-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Belisle Wayne T → Solitaire Coal Corp Inc; 1982-07-20 to current/open; source msha-controller-operator-history