# Relationship history for MSHA mine 4608041

Current hierarchy: **Smith Stirl Richard → Raleigh Mine & Industrial Supply Inc → Emerald Plant**

- 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:** Raleigh Mine & Industrial Supply Inc → Emerald Plant; 1991-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Smith Stirl Richard → Emerald Plant; 1991-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Smith Stirl Richard → Raleigh Mine & Industrial Supply Inc; 1991-05-01 to current/open; source msha-controller-operator-history