# Relationship history for MSHA mine 1700703

Current hierarchy: **Bruce  Edgecomb; Robert  Walton; Ryan  Carrigan → Ray Labbe & Sons Inc → BRUNSWICK GRAVEL PIT**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Peter  Labbe → BRUNSWICK GRAVEL PIT; 2000-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ray Labbe & Sons Inc → BRUNSWICK GRAVEL PIT; 2001-06-01 to 2019-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Peter  Labbe → Ray Labbe & Sons Inc; 2001-06-01 to 2019-04-11; source msha-controller-operator-history
- **operator_operates_mine:** Ray Labbe & Sons Inc → BRUNSWICK GRAVEL PIT; 2019-04-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Walton et al → BRUNSWICK GRAVEL PIT; 2019-04-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Walton et al → Ray Labbe & Sons Inc; 2019-04-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ryan  Carrigan et al → Ray Labbe & Sons Inc; 2019-04-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bruce  Edgecomb et al → Ray Labbe & Sons Inc; 2019-04-12 to current/open; source msha-controller-operator-history