# Relationship history for MSHA mine 3800765

Current hierarchy: **Ronald E Petty III; James R Petty → A-1 Service Group → Powerscreen 2400**

- 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:** James R Petty et al → Powerscreen 2400; 2022-03-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** A-1 Service Group → Powerscreen 2400; 2023-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James R Petty et al → A-1 Service Group; 2023-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald E Petty III et al → A-1 Service Group; 2023-08-08 to current/open; source msha-controller-operator-history