# Relationship history for MSHA mine 1700334

Current hierarchy: **David  Pepin → R Pepin & Sons Inc → Wash Plant and Cone Crusher**

- 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

- **operator_operates_mine:** R Pepin & Sons Inc → Wash Plant and Cone Crusher; 1950-01-01 to 1995-12-28; source msha-controller-operator-history
- **controller_controls_mine:** Bertrand  Pepin → Wash Plant and Cone Crusher; 1950-01-01 to 1995-12-28; source msha-controller-operator-history
- **controller_controls_operator:** Bertrand  Pepin → R Pepin & Sons Inc; 1950-01-01 to 1995-12-28; source msha-controller-operator-history
- **operator_operates_mine:** R Pepin & Sons Inc → Wash Plant and Cone Crusher; 1995-12-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David  Pepin → Wash Plant and Cone Crusher; 1995-12-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Pepin → R Pepin & Sons Inc; 1995-12-29 to current/open; source msha-controller-operator-history