# Relationship history for MSHA mine 0404827

Current hierarchy: **Deleo Gerald K-Carol A Young → Alberhill Dee Gee → Alberhill Dee Gee**

- 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:** Alberhill Dee Gee → Alberhill Dee Gee; 1986-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Deleo Gerald K-Carol A Young Et Al → Alberhill Dee Gee; 1986-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Deleo Gerald K-Carol A Young Et Al → Alberhill Dee Gee; 1986-07-01 to current/open; source msha-controller-operator-history