# Relationship history for MSHA mine 2003486

Current hierarchy: **Peter  O'Dovero → Associated Constructors LLC → Portable Plant #1 Pioneer**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Associated Constructors LLC → Portable Plant #1 Pioneer; 2014-04-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peter  O'Dovero → Portable Plant #1 Pioneer; 2014-04-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peter  O'Dovero → Associated Constructors LLC; 2014-04-25 to current/open; source msha-controller-operator-history