# Relationship history for MSHA mine 4401900

Current hierarchy: **Jessie  Meadows → Coal Valley Mining Inc → No 4 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:** Van Dyke Brothers Coal Company Inc → No 4 Mine; 1950-01-01 to 1979-03-20; source msha-controller-operator-history
- **controller_controls_mine:** Van Dyke Ray-Virgle-Harold Et Al → No 4 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Van Dyke Ray-Virgle-Harold Et Al → Van Dyke Brothers Coal Company Inc; 1950-01-01 to 1979-03-20; source msha-controller-operator-history
- **controller_controls_mine:** Stiltner Denver → No 4 Mine; 1973-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jessie  Meadows → No 4 Mine; 1975-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Grapevine Coal Co Inc → No 4 Mine; 1979-03-21 to 1979-11-04; source msha-controller-operator-history
- **controller_controls_operator:** Stiltner Denver → Grapevine Coal Co Inc; 1979-03-21 to 1979-11-04; source msha-controller-operator-history
- **operator_operates_mine:** Coal Valley Mining Inc → No 4 Mine; 1979-11-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jessie  Meadows → Coal Valley Mining Inc; 1979-11-05 to current/open; source msha-controller-operator-history