# Relationship history for MSHA mine 2401853

Current hierarchy: **Bryant Barry → Micah Mining Corp → Rainbow 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Mc Combs Mining → Rainbow Mill; 1987-10-01 to 1989-09-25; source msha-controller-operator-history
- **controller_controls_mine:** Mc Combs Lee Roy Et Al → Rainbow Mill; 1987-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Combs Lee Roy Et Al → Mc Combs Mining; 1987-10-01 to 1989-09-25; source msha-controller-operator-history
- **operator_operates_mine:** Micah Mining Corp → Rainbow Mill; 1989-09-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bryant Barry → Rainbow Mill; 1989-09-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bryant Barry → Micah Mining Corp; 1989-09-26 to current/open; source msha-controller-operator-history