# Relationship history for MSHA mine 4405464

Current hierarchy: **Charles Warren → D D & M Mining Inc → No 4**

- 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:** Charles Warren → No 4; 1980-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Linda Coal Company → No 4; 1980-07-01 to 1980-10-08; source msha-controller-operator-history
- **controller_controls_mine:** Varney Danny Et Al → No 4; 1980-07-01 to 1984-02-15; source msha-controller-operator-history
- **controller_controls_operator:** Varney Danny Et Al → Linda Coal Company; 1980-07-01 to 1980-10-08; source msha-controller-operator-history
- **operator_operates_mine:** D D & M Mining Inc → No 4; 1980-10-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles Warren → D D & M Mining Inc; 1980-10-09 to current/open; source msha-controller-operator-history