# Relationship history for MSHA mine 2601261

Current hierarchy: **Fred  Siaosi; Geoff  Sando → HUMBOLDT MINING COMPANY → Prunty 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

- **controller_controls_mine:** Koncher Louie → Prunty Mine; 1982-03-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** San Rafael Exploration Company → Prunty Mine; 1982-07-01 to 2026-03-11; source msha-controller-operator-history
- **controller_controls_operator:** Koncher Louie → San Rafael Exploration Company; 1982-07-01 to 2026-03-11; source msha-controller-operator-history
- **operator_operates_mine:** HUMBOLDT MINING COMPANY → Prunty Mine; 2026-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Geoff  Sando et al → Prunty Mine; 2026-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Geoff  Sando et al → HUMBOLDT MINING COMPANY; 2026-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fred  Siaosi et al → HUMBOLDT MINING COMPANY; 2026-03-12 to current/open; source msha-controller-operator-history