# Relationship history for MSHA mine 1515258

Current hierarchy: **Pecco Nick & John Ball Jr → Pecco Partnership → #1 Auger**

- 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:** Pecco Nick & John Ball Jr → #1 Auger; 1983-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pecco Partnership → #1 Auger; 1985-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pecco Nick & John Ball Jr → Pecco Partnership; 1985-06-01 to current/open; source msha-controller-operator-history