# Relationship history for MSHA mine 1202245

Current hierarchy: **Rogers Group Inc → Rogers Group, Inc. → Bloomington Crown 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Rogers Group Inc → Bloomington Crown Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Blackwell Moore Inc → Bloomington Crown Quarry; 1998-12-01 to 2001-11-19; source msha-controller-operator-history
- **controller_controls_mine:** Carol A  Blackwell  et al → Bloomington Crown Quarry; 1998-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carol A  Blackwell  et al → Blackwell Moore Inc; 1998-12-01 to 2001-11-19; source msha-controller-operator-history
- **controller_controls_operator:** Carla  Moore  et al → Blackwell Moore Inc; 1998-12-01 to 2001-11-19; source msha-controller-operator-history
- **operator_operates_mine:** Rogers Group, Inc. → Bloomington Crown Quarry; 2001-11-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rogers Group Inc → Rogers Group, Inc.; 2001-11-20 to current/open; source msha-controller-operator-history