# Relationship history for MSHA mine 0100766

Current hierarchy: **Davis  Henry → Henry Brick Company Inc → 27-Henry Brick-2**

- 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

- **operator_operates_mine:** Henry Brick Company Inc → 27-Henry Brick-2; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ted M  Henry → 27-Henry Brick-2; 1950-01-01 to 2018-03-07; source msha-controller-operator-history
- **controller_controls_operator:** Ted M  Henry → Henry Brick Company Inc; 1950-01-01 to 2018-03-07; source msha-controller-operator-history
- **controller_controls_mine:** Davis  Henry → 27-Henry Brick-2; 2018-03-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Davis  Henry → Henry Brick Company Inc; 2018-03-08 to current/open; source msha-controller-operator-history