# Relationship history for MSHA mine 1201578

Current hierarchy: **Banner Industries Inc → Banner Energy Corp Of Indiana Inc → Banner Energy Plant #4**

- 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:** R & T Coal Recovery Company → Banner Energy Plant #4; 1977-05-01 to 1978-10-30; source msha-controller-operator-history
- **controller_controls_mine:** Theobald Edward C-James I Roll--Lawrence & Wm Cope → Banner Energy Plant #4; 1977-05-01 to 1978-10-30; source msha-controller-operator-history
- **controller_controls_operator:** Theobald Edward C-James I Roll--Lawrence & Wm Cope → R & T Coal Recovery Company; 1977-05-01 to 1978-10-30; source msha-controller-operator-history
- **controller_controls_mine:** Banner Industries Inc → Banner Energy Plant #4; 1978-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Banner Energy Corp Of Indiana Inc → Banner Energy Plant #4; 1978-10-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Banner Industries Inc → Banner Energy Corp Of Indiana Inc; 1978-10-31 to current/open; source msha-controller-operator-history