# Relationship history for MSHA mine 4702582

Current hierarchy: **John M Peterson → James Peterson Sons, Inc. → Lippmann Breaker (170103 Backup 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** James Peterson Sons, Inc. → Lippmann Breaker (170103 Backup Plant); 1979-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John M Peterson → Lippmann Breaker (170103 Backup Plant); 1979-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John M Peterson → James Peterson Sons, Inc.; 1979-01-01 to current/open; source msha-controller-operator-history