# Relationship history for MSHA mine 1519967

Current hierarchy: **Greg  Sears; Jonathan  Sears; Geneva  Sears; Rachel  Sears → Bluegrass Stone, LLC → Russellville 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

- **operator_operates_mine:** Bluegrass Stone, LLC → Russellville Quarry; 2024-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jonathan  Sears et al → Russellville Quarry; 2024-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jonathan  Sears et al → Bluegrass Stone, LLC; 2024-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Sears et al → Bluegrass Stone, LLC; 2024-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rachel  Sears et al → Bluegrass Stone, LLC; 2024-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Geneva  Sears et al → Bluegrass Stone, LLC; 2024-10-10 to current/open; source msha-controller-operator-history