# Relationship history for MSHA mine 2301990

Current hierarchy: **David E  Bailey → Fall Valley Stone Inc → Fall Valley Stone Inc**

- 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:** Rose Quarry → Fall Valley Stone Inc; 1988-05-01 to 1994-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Ivan L  Rose → Fall Valley Stone Inc; 1988-05-01 to 1994-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Ivan L  Rose → Rose Quarry; 1988-05-01 to 1994-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Fall Valley Stone Inc → Fall Valley Stone Inc; 1994-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David E  Bailey  et al → Fall Valley Stone Inc; 1994-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David E  Bailey  et al → Fall Valley Stone Inc; 1994-03-01 to current/open; source msha-controller-operator-history