# Relationship history for MSHA mine 1302478

Current hierarchy: **Chad  Cleveringa → Cleveringa Excavating LLC → CE- Plant #2**

- 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:** Chad  Cleveringa → CE- Plant #2; 2008-03-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cleveringa Excavating LLC → CE- Plant #2; 2019-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chad  Cleveringa → Cleveringa Excavating LLC; 2019-03-13 to current/open; source msha-controller-operator-history