# Relationship history for MSHA mine 1300151

Current hierarchy: **Greg  Bruening → Bruening Rock Products Inc → Brooks Quarry**

- 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:** Greg  Bruening → Brooks Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James L  Niemann → Brooks Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Harry Brooks → Brooks Quarry; 1950-01-01 to 1978-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Brooks Harry → Brooks Quarry; 1950-01-01 to 1978-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Brooks Harry → Harry Brooks; 1950-01-01 to 1978-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Paul Niemann Construction Company → Brooks Quarry; 1978-12-01 to 1984-01-31; source msha-controller-operator-history
- **controller_controls_operator:** James L  Niemann → Paul Niemann Construction Company; 1978-12-01 to 1984-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Bruening Rock Products Inc → Brooks Quarry; 1984-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Bruening → Bruening Rock Products Inc; 1984-02-01 to current/open; source msha-controller-operator-history