# Relationship history for MSHA mine 4103258

Current hierarchy: **Ronnie  Jones; Terry  Bryant → Jones Bros Dirt & Paving Contractors Inc → Barstow Pit**

- 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

- **controller_controls_mine:** Ronnie  Jones et al → Barstow Pit; 1984-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jones Bros Dirt & Paving Contractors Inc → Barstow Pit; 1984-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronnie  Jones et al → Jones Bros Dirt & Paving Contractors Inc; 1984-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terry  Bryant et al → Jones Bros Dirt & Paving Contractors Inc; 1984-09-01 to current/open; source msha-controller-operator-history