# Relationship history for MSHA mine 2103716

Current hierarchy: **Dean A.  Eggena → Crosslake Const. Demolition Debris Facility Inc. → Crosslake Demolition**

- 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

- **operator_operates_mine:** Crosslake Const. Demolition Debris Facility Inc. → Crosslake Demolition; 2010-08-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dean A.  Eggena → Crosslake Demolition; 2010-08-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dean A.  Eggena → Crosslake Const. Demolition Debris Facility Inc.; 2010-08-17 to current/open; source msha-controller-operator-history