# Relationship history for MSHA mine 1700039

Current hierarchy: **R J Finlay & Co → Morin Brick Company → Danville Pit And Mill**

- 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:** Morin Brick Company → Danville Pit And Mill; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Morin Brick Company → Danville Pit And Mill; 1950-01-01 to 2009-03-26; source msha-controller-operator-history
- **controller_controls_operator:** Morin Brick Company → Morin Brick Company; 1950-01-01 to 2009-03-26; source msha-controller-operator-history
- **controller_controls_mine:** R J Finlay & Co → Danville Pit And Mill; 2009-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** R J Finlay & Co → Morin Brick Company; 2009-03-27 to current/open; source msha-controller-operator-history