# Relationship history for MSHA mine 2602854

Current hierarchy: **Quanta Services Inc → CONAM Construction → Wheeler Rental C3054 Jaw Crusher**

- 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:** CONAM Construction → Wheeler Rental C3054 Jaw Crusher; 2020-01-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Quanta Services Inc → Wheeler Rental C3054 Jaw Crusher; 2020-01-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Quanta Services Inc → CONAM Construction; 2020-01-23 to current/open; source msha-controller-operator-history