# Relationship history for MSHA mine 1504130

Current hierarchy: **Bowling Charles D → Logan Lucas Coal Corp → No 6 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:** K & K Coal Co Inc → No 6 Mine; 1950-01-01 to 1975-08-18; source msha-controller-operator-history
- **controller_controls_mine:** King Felix → No 6 Mine; 1950-01-01 to 1975-08-18; source msha-controller-operator-history
- **controller_controls_operator:** King Felix → K & K Coal Co Inc; 1950-01-01 to 1975-08-18; source msha-controller-operator-history
- **controller_controls_mine:** Bowling Charles D Et Al → No 6 Mine; 1974-07-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Logan Lucas Coal Corp → No 6 Mine; 1975-08-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bowling Charles D Et Al → Logan Lucas Coal Corp; 1975-08-19 to current/open; source msha-controller-operator-history