# Relationship history for MSHA mine 1202123

Current hierarchy: **Jeff S  Kimmel; Tom E  Kimmel → Indian Creek Stone Products → PHOENIX EUREKA A**

- 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:** Phoenix Limestone Company → PHOENIX EUREKA A; 1992-08-01 to 2022-03-17; source msha-controller-operator-history
- **controller_controls_mine:** Richards Jim → PHOENIX EUREKA A; 1992-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richards Jim → Phoenix Limestone Company; 1992-08-01 to 2022-03-17; source msha-controller-operator-history
- **controller_controls_mine:** Tom E  Kimmel et al → PHOENIX EUREKA A; 2009-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Indian Creek Stone Products → PHOENIX EUREKA A; 2022-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tom E  Kimmel et al → Indian Creek Stone Products; 2022-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff S  Kimmel et al → Indian Creek Stone Products; 2022-03-18 to current/open; source msha-controller-operator-history