# Relationship history for MSHA mine 4404984

Current hierarchy: **Whited Leon → Prospect Coal Company → No 5**

- 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:** Whited Leon → No 5; 1977-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Farmer Charles T → No 5; 1978-02-01 to 1981-02-19; source msha-controller-operator-history
- **operator_operates_mine:** Prospect Coal Company → No 5; 1978-03-01 to 1978-05-08; source msha-controller-operator-history
- **controller_controls_operator:** Whited Leon → Prospect Coal Company; 1978-03-01 to 1978-05-08; source msha-controller-operator-history
- **operator_operates_mine:** Bounty Mining Corp → No 5; 1978-05-09 to 1980-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Farmer Charles T → Bounty Mining Corp; 1978-05-09 to 1980-10-15; source msha-controller-operator-history
- **operator_operates_mine:** Prospect Coal Company → No 5; 1980-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Whited Leon → Prospect Coal Company; 1980-10-16 to current/open; source msha-controller-operator-history