# Relationship history for MSHA mine 0404676

Current hierarchy: **Hammond Glen R → Oro Limited → ROBBERS ROOST**

- 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:** Genesis Mining & Milling → ROBBERS ROOST; 1983-11-01 to 1989-05-17; source msha-controller-operator-history
- **controller_controls_mine:** Hammond Melvin K → ROBBERS ROOST; 1983-11-01 to 1989-05-17; source msha-controller-operator-history
- **controller_controls_operator:** Hammond Melvin K → Genesis Mining & Milling; 1983-11-01 to 1989-05-17; source msha-controller-operator-history
- **operator_operates_mine:** Oro Limited → ROBBERS ROOST; 1989-05-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hammond Glen R Et Al → ROBBERS ROOST; 1989-05-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hammond Glen R Et Al → Oro Limited; 1989-05-18 to current/open; source msha-controller-operator-history