# Relationship history for MSHA mine 1102716

Current hierarchy: **Ronald H  Bower → Rainbow Stone Limited → MO MAC QUARRY**

- 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:** Rainbow Stone Limited → MO MAC QUARRY; 1979-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ronald H  Bower → MO MAC QUARRY; 1979-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald H  Bower → Rainbow Stone Limited; 1979-11-01 to current/open; source msha-controller-operator-history