# Relationship history for MSHA mine 0405154

Current hierarchy: **Jim  Broyles → Corona Aggregates Inc → CORONA AGGREGATES**

- 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

- **operator_operates_mine:** Corona Aggregates Inc → CORONA AGGREGATES; 1991-07-01 to 1993-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Frank  Smith → CORONA AGGREGATES; 1991-07-01 to 1993-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Frank  Smith → Corona Aggregates Inc; 1991-07-01 to 1993-03-14; source msha-controller-operator-history
- **operator_operates_mine:** Corona Aggregates Inc → CORONA AGGREGATES; 1993-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jim  Broyles et al → CORONA AGGREGATES; 1993-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jim  Broyles et al → Corona Aggregates Inc; 1993-03-15 to current/open; source msha-controller-operator-history