# Relationship history for MSHA mine 0404923

Current hierarchy: **Jim  Broyles → San Jacinto Aggregates Inc → Soboba Plant**

- 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:** San Jacinto Aggregates Inc → Soboba Plant; 1988-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jim  Broyles et al → Soboba Plant; 1988-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jim  Broyles et al → San Jacinto Aggregates Inc; 1988-02-01 to current/open; source msha-controller-operator-history