# Relationship history for MSHA mine 2301048

Current hierarchy: **Deeker Marvin W → Deeker Mining Inc → K-Deeker**

- 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:** Kaiser Aluminum & Chemical Corp → K-Deeker; 1950-01-01 to 1982-12-12; source msha-controller-operator-history
- **controller_controls_mine:** Kaiser Aluminum & Chemical Corp → K-Deeker; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kaiser Aluminum & Chemical Corp → Kaiser Aluminum & Chemical Corp; 1950-01-01 to 1982-12-12; source msha-controller-operator-history
- **operator_operates_mine:** Deeker Mining Inc → K-Deeker; 1982-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Deeker Marvin W → K-Deeker; 1982-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Deeker Marvin W → Deeker Mining Inc; 1982-12-13 to current/open; source msha-controller-operator-history