# Relationship history for MSHA mine 4405007

Current hierarchy: **Turner Dennis M-Rual Fuller → Grundy Red Ash Coal Corp → No 1 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

- **controller_controls_mine:** Epling David → No 1 Mine; 1978-03-01 to 1979-03-08; source msha-controller-operator-history
- **operator_operates_mine:** Divided Coal Corp → No 1 Mine; 1978-04-01 to 1978-11-02; source msha-controller-operator-history
- **controller_controls_operator:** Epling David → Divided Coal Corp; 1978-04-01 to 1978-11-02; source msha-controller-operator-history
- **operator_operates_mine:** Grundy Red Ash Coal Corp → No 1 Mine; 1978-11-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Turner Dennis M-Rual Fuller Et Al → No 1 Mine; 1978-11-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Turner Dennis M-Rual Fuller Et Al → Grundy Red Ash Coal Corp; 1978-11-03 to current/open; source msha-controller-operator-history