# Relationship history for MSHA mine 2901824

Current hierarchy: **Safiri Arjang-Bam Rolando & Albert Michaels → Amiran Company Ltd → Desiderio Mine**

- 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:** Amiran Company Ltd → Desiderio Mine; 1980-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Safiri Arjang-Bam Rolando & Albert Michaels → Desiderio Mine; 1980-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Safiri Arjang-Bam Rolando & Albert Michaels → Amiran Company Ltd; 1980-04-01 to current/open; source msha-controller-operator-history