# Relationship history for MSHA mine 3608737

Current hierarchy: **Timothy M  Smith → Timothy M Smith → RAINBOW 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

- **operator_operates_mine:** Finch Flagstone → RAINBOW QUARRY; 1998-06-01 to 1999-09-22; source msha-controller-operator-history
- **controller_controls_mine:** Sam  Finch  et al → RAINBOW QUARRY; 1998-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sam  Finch  et al → Finch Flagstone; 1998-06-01 to 1999-09-22; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Finch  et al → Finch Flagstone; 1998-06-01 to 1999-09-22; source msha-controller-operator-history
- **operator_operates_mine:** Timothy M Smith → RAINBOW QUARRY; 1999-09-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Timothy M  Smith → RAINBOW QUARRY; 1999-09-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy M  Smith → Timothy M Smith; 1999-09-23 to current/open; source msha-controller-operator-history