# Relationship history for MSHA mine 1201588

Current hierarchy: **Taylor Walter Scott Sr & Jr → Bright Star Mining Inc → Kelco No 2 Strip**

- 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:** Kelco Of Indiana Inc → Kelco No 2 Strip; 1977-07-01 to 1979-01-29; source msha-controller-operator-history
- **controller_controls_mine:** West Roger H → Kelco No 2 Strip; 1977-07-01 to 1979-05-31; source msha-controller-operator-history
- **controller_controls_operator:** West Roger H → Kelco Of Indiana Inc; 1977-07-01 to 1979-01-29; source msha-controller-operator-history
- **controller_controls_mine:** Taylor Walter Scott Sr & Jr → Kelco No 2 Strip; 1978-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bright Star Mining Inc → Kelco No 2 Strip; 1979-01-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Taylor Walter Scott Sr & Jr → Bright Star Mining Inc; 1979-01-30 to current/open; source msha-controller-operator-history