# Relationship history for MSHA mine 3608974

Current hierarchy: **Sam  Finch; Tim  Finch → Finch Flagstone → WHICKHISER QUARRY**

- 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:** Sam  Finch  et al → WHICKHISER QUARRY; 1998-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Finch Flagstone → WHICKHISER QUARRY; 2001-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sam  Finch  et al → Finch Flagstone; 2001-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Finch  et al → Finch Flagstone; 2001-04-01 to current/open; source msha-controller-operator-history