# Relationship history for MSHA mine 2602777

Current hierarchy: **Granite Construction Inc → Cinderlite Trucking Corp → Dayton Pit**

- 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

- **controller_controls_mine:** Gary  Lehman → Dayton Pit; 2001-09-26 to 2025-10-05; source msha-controller-operator-history
- **operator_operates_mine:** Cinderlite Trucking Corp → Dayton Pit; 2015-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Lehman → Cinderlite Trucking Corp; 2015-03-12 to 2025-10-05; source msha-controller-operator-history
- **controller_controls_mine:** Granite Construction Inc → Dayton Pit; 2025-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Granite Construction Inc → Cinderlite Trucking Corp; 2025-10-06 to current/open; source msha-controller-operator-history