# Relationship history for MSHA mine 2401474

Current hierarchy: **Resource Investment Inc → G & L Mining → Sapphires Ventures**

- 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:** G & L Mining → Sapphires Ventures; 1981-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Resource Investment Inc → Sapphires Ventures; 1981-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Resource Investment Inc → G & L Mining; 1981-08-01 to current/open; source msha-controller-operator-history