# Relationship history for MSHA mine 4405033

Current hierarchy: **Lawson John & Truman → Lawson Mining Company Inc → Edison 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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Fleming William Lewis & Edward--John Jordan → Edison Mine; 1976-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bell Coal Company → Edison Mine; 1978-05-01 to 1981-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Fleming William Lewis & Edward--John Jordan → Bell Coal Company; 1978-05-01 to 1981-07-19; source msha-controller-operator-history
- **controller_controls_mine:** Marshall Banner → Edison Mine; 1980-11-01 to 1981-11-11; source msha-controller-operator-history
- **operator_operates_mine:** Edison Coal Company Inc → Edison Mine; 1981-07-20 to 1981-11-11; source msha-controller-operator-history
- **controller_controls_operator:** Marshall Banner → Edison Coal Company Inc; 1981-07-20 to 1981-11-11; source msha-controller-operator-history
- **controller_controls_mine:** Davis Jerry M Et Al → Edison Mine; 1981-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Edison Coal Company Inc → Edison Mine; 1981-11-12 to 1983-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Davis Jerry M Et Al → Edison Coal Company Inc; 1981-11-12 to 1983-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Lawson Mining Company Inc → Edison Mine; 1983-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lawson John & Truman → Edison Mine; 1983-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lawson John & Truman → Lawson Mining Company Inc; 1983-03-01 to current/open; source msha-controller-operator-history