# Relationship history for MSHA mine 0100972

Current hierarchy: **Taylor Walter Scott Sr & Jr → Taylor Coal Company Inc → Fayette Mines**

- 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:** Taylor Walter Scott Sr & Jr → Fayette Mines; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Headrick Coal Co - Taylor & Son Safety Division → Fayette Mines; 1975-01-15 to 1975-02-16; source msha-controller-operator-history
- **controller_controls_mine:** Headrick Coal Co → Fayette Mines; 1975-01-15 to 1975-02-16; source msha-controller-operator-history
- **controller_controls_operator:** Headrick Coal Co → Headrick Coal Co - Taylor & Son Safety Division; 1975-01-15 to 1975-02-16; source msha-controller-operator-history
- **operator_operates_mine:** Taylor Coal Company Inc → Fayette Mines; 1975-02-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Taylor Walter Scott Sr & Jr → Taylor Coal Company Inc; 1975-02-17 to current/open; source msha-controller-operator-history