# Relationship history for MSHA mine 2401282

Current hierarchy: **Donata Resources Inc → Donata Resources Inc → Minerals Processing Mill**

- 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:** Sorensen Corp → Minerals Processing Mill; 1950-01-01 to 1982-01-04; source msha-controller-operator-history
- **controller_controls_mine:** Sorensen Corp → Minerals Processing Mill; 1950-01-01 to 1982-01-04; source msha-controller-operator-history
- **controller_controls_operator:** Sorensen Corp → Sorensen Corp; 1950-01-01 to 1982-01-04; source msha-controller-operator-history
- **controller_controls_mine:** Donata Resources Inc → Minerals Processing Mill; 1980-11-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Donata Resources Inc → Minerals Processing Mill; 1982-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donata Resources Inc → Donata Resources Inc; 1982-01-05 to current/open; source msha-controller-operator-history