# Relationship history for MSHA mine 4607040

Current hierarchy: **Jones William → Flex Enterprises Inc → Plant No 1**

- 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:** Hall Henry → Plant No 1; 1974-07-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Adanac Coal Company Inc → Plant No 1; 1985-12-01 to 1986-11-04; source msha-controller-operator-history
- **controller_controls_operator:** Hall Henry → Adanac Coal Company Inc; 1985-12-01 to 1986-11-04; source msha-controller-operator-history
- **operator_operates_mine:** J F H Coal Company Inc → Plant No 1; 1986-11-05 to 1988-05-17; source msha-controller-operator-history
- **controller_controls_mine:** Hall Julius F → Plant No 1; 1986-11-05 to 1988-05-17; source msha-controller-operator-history
- **controller_controls_operator:** Hall Julius F → J F H Coal Company Inc; 1986-11-05 to 1988-05-17; source msha-controller-operator-history
- **operator_operates_mine:** Flex Enterprises Inc → Plant No 1; 1988-05-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jones William → Plant No 1; 1988-05-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jones William → Flex Enterprises Inc; 1988-05-18 to current/open; source msha-controller-operator-history