# Relationship history for MSHA mine 4405955

Current hierarchy: **Lester James E → Hopefull Coal Company → 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:** Skeens Dewey & Robert Pugh → No 1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mc Cloud Coal Company → No 1 Mine; 1982-10-01 to 1983-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Skeens Dewey & Robert Pugh → Mc Cloud Coal Company; 1982-10-01 to 1983-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Semco Coal Corp → No 1 Mine; 1983-06-01 to 1984-09-04; source msha-controller-operator-history
- **controller_controls_mine:** Vandyke Leon & James Messer → No 1 Mine; 1983-06-01 to 1984-09-04; source msha-controller-operator-history
- **controller_controls_operator:** Vandyke Leon & James Messer → Semco Coal Corp; 1983-06-01 to 1984-09-04; source msha-controller-operator-history
- **operator_operates_mine:** Semco Coal Company → No 1 Mine; 1984-09-05 to 1987-02-01; source msha-controller-operator-history
- **controller_controls_mine:** Freeman Robert → No 1 Mine; 1984-09-05 to 1987-02-01; source msha-controller-operator-history
- **controller_controls_operator:** Freeman Robert → Semco Coal Company; 1984-09-05 to 1987-02-01; source msha-controller-operator-history
- **operator_operates_mine:** Hopefull Coal Company → No 1 Mine; 1987-02-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lester James E → No 1 Mine; 1987-02-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lester James E → Hopefull Coal Company; 1987-02-02 to current/open; source msha-controller-operator-history