# Relationship history for MSHA mine 1513718

Current hierarchy: **Potter Reed Sr → L & R Fuels Inc → No 1**

- 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:** Coleman Clifford → No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Potter Reed Sr → No 1; 1977-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mountain View Coal Company Inc → No 1; 1982-09-01 to 1984-03-06; source msha-controller-operator-history
- **controller_controls_operator:** Coleman Clifford → Mountain View Coal Company Inc; 1982-09-01 to 1984-03-06; source msha-controller-operator-history
- **operator_operates_mine:** L & R Fuels Inc → No 1; 1984-03-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Potter Reed Sr → L & R Fuels Inc; 1984-03-07 to current/open; source msha-controller-operator-history