# Relationship history for MSHA mine 4502844

Current hierarchy: **W E (Red)  Lumdsen → R V Associates Inc → Haselwood 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Walter J  Goit → Haselwood Pit; 1979-01-01 to 1985-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Brem Rock Inc → Haselwood Pit; 1980-07-01 to 1985-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Walter J  Goit → Brem Rock Inc; 1980-07-01 to 1985-12-31; source msha-controller-operator-history
- **operator_operates_mine:** R V Associates Inc → Haselwood Pit; 1986-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** W E (Red)  Lumdsen → Haselwood Pit; 1986-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** W E (Red)  Lumdsen → R V Associates Inc; 1986-01-01 to current/open; source msha-controller-operator-history