# Relationship history for MSHA mine 4001782

Current hierarchy: **Hamilton Hollie → Pinnacle Mining Inc → Francis No1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Tenn-Tex Minerals Inc → Francis No1; 1975-05-08 to 1978-11-29; source msha-controller-operator-history
- **controller_controls_mine:** Robertson C T → Francis No1; 1975-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robertson C T → Tenn-Tex Minerals Inc; 1975-05-08 to 1978-11-29; source msha-controller-operator-history
- **controller_controls_mine:** Rugg Frederick U Iii → Francis No1; 1978-07-05 to 1979-12-02; source msha-controller-operator-history
- **operator_operates_mine:** Elevated Energy Inc → Francis No1; 1978-11-30 to 1979-12-02; source msha-controller-operator-history
- **controller_controls_operator:** Rugg Frederick U Iii → Elevated Energy Inc; 1978-11-30 to 1979-12-02; source msha-controller-operator-history
- **operator_operates_mine:** Bobcat Coal Company Inc → Francis No1; 1979-12-03 to 1981-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Anderson G M → Francis No1; 1979-12-03 to 1981-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Anderson G M → Bobcat Coal Company Inc; 1979-12-03 to 1981-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Grey Wolf Mining Inc → Francis No1; 1981-07-01 to 1982-02-25; source msha-controller-operator-history
- **controller_controls_mine:** Williamson Charles O → Francis No1; 1981-07-01 to 1982-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Williamson Charles O → Grey Wolf Mining Inc; 1981-07-01 to 1982-02-25; source msha-controller-operator-history
- **operator_operates_mine:** Pinnacle Mining Inc → Francis No1; 1982-02-26 to 1982-09-06; source msha-controller-operator-history
- **controller_controls_mine:** Robertson C T → Francis No1; 1982-02-26 to 1982-09-06; source msha-controller-operator-history
- **controller_controls_operator:** Robertson C T → Pinnacle Mining Inc; 1982-02-26 to 1982-09-06; source msha-controller-operator-history
- **operator_operates_mine:** Pinnacle Mining Inc → Francis No1; 1982-09-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hamilton Hollie → Francis No1; 1982-09-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hamilton Hollie → Pinnacle Mining Inc; 1982-09-07 to current/open; source msha-controller-operator-history