# Relationship history for MSHA mine 4300349

Current hierarchy: **A R  Rathbun → A R RATHBUN → RATHBUN 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:** Lawrence  Booska → RATHBUN PIT; 1950-01-01 to 1988-06-28; source msha-controller-operator-history
- **operator_operates_mine:** L R Booska Corp → RATHBUN PIT; 1980-09-01 to 1984-10-22; source msha-controller-operator-history
- **controller_controls_operator:** Lawrence  Booska → L R Booska Corp; 1980-09-01 to 1984-10-22; source msha-controller-operator-history
- **operator_operates_mine:** A R Rathbun → RATHBUN PIT; 1984-10-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** A R  Rathbun → RATHBUN PIT; 1984-10-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** A R  Rathbun → A R Rathbun; 1984-10-23 to current/open; source msha-controller-operator-history