# Relationship history for MSHA mine 3608072

Current hierarchy: **Continental Cogeneration Corp (CCC) → Continental Energy Associates Lp → Humboldt Cogeneration Facility**

- 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:** Continental Cogeneration Corp (CCC) et al → Humboldt Cogeneration Facility; 1987-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Continental Energy Associates Lp → Humboldt Cogeneration Facility; 1989-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Continental Cogeneration Corp (CCC) et al → Continental Energy Associates Lp; 1989-03-01 to current/open; source msha-controller-operator-history