# Relationship history for MSHA mine 3601789

Current hierarchy: **Bulino Michael E → Baylor Rush Inc → #2 Slope**

- 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:** Bernitsky & Stenulis Coal Company → #2 Slope; 1950-01-01 to 1988-06-20; source msha-controller-operator-history
- **controller_controls_mine:** Bernitsky Joseph Et Al → #2 Slope; 1950-01-01 to 1988-06-20; source msha-controller-operator-history
- **controller_controls_operator:** Bernitsky Joseph Et Al → Bernitsky & Stenulis Coal Company; 1950-01-01 to 1988-06-20; source msha-controller-operator-history
- **operator_operates_mine:** Baylor Rush Inc → #2 Slope; 1988-06-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bulino Michael E → #2 Slope; 1988-06-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bulino Michael E → Baylor Rush Inc; 1988-06-21 to current/open; source msha-controller-operator-history