# Relationship history for MSHA mine 3605140

Current hierarchy: **George John J → J & R Energies Company Inc → J & R Energies Company Inc**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Fran-Ru Enterprises Inc → J & R Energies Company Inc; 1974-08-01 to 1976-03-23; source msha-controller-operator-history
- **controller_controls_mine:** George John J Et Al → J & R Energies Company Inc; 1974-08-01 to 1976-03-23; source msha-controller-operator-history
- **controller_controls_operator:** George John J Et Al → Fran-Ru Enterprises Inc; 1974-08-01 to 1976-03-23; source msha-controller-operator-history
- **operator_operates_mine:** Fran-Ru Enterprises Inc → J & R Energies Company Inc; 1976-03-24 to 1978-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Metropolitan International Inc → J & R Energies Company Inc; 1976-03-24 to 1978-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Metropolitan International Inc → Fran-Ru Enterprises Inc; 1976-03-24 to 1978-06-30; source msha-controller-operator-history
- **operator_operates_mine:** J & R Energies Company Inc → J & R Energies Company Inc; 1978-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** George John J Et Al → J & R Energies Company Inc; 1978-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George John J Et Al → J & R Energies Company Inc; 1978-07-01 to current/open; source msha-controller-operator-history