# Relationship history for MSHA mine 4401879

Current hierarchy: **Fletcher Paul & Lawson Ramey → Little Rock Coal Company → No 17 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:** J & M Coal Company → No 17 Mine; 1950-01-01 to 1976-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Mc Clanahan Elmer → No 17 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Clanahan Elmer → J & M Coal Company; 1950-01-01 to 1976-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Fletcher Paul & Lawson Ramey → No 17 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Little Rock Coal Company → No 17 Mine; 1976-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fletcher Paul & Lawson Ramey → Little Rock Coal Company; 1976-09-15 to current/open; source msha-controller-operator-history