# Relationship history for MSHA mine 3003502

Current hierarchy: **James J  Baker; Kim F  Baker → JBS DIRT, INC. → SHAMROCK 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

- **operator_operates_mine:** JBS DIRT, INC. → SHAMROCK PIT; 2005-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kim F  Baker et al → SHAMROCK PIT; 2005-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kim F  Baker et al → JBS DIRT, INC.; 2005-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James J  Baker et al → JBS DIRT, INC.; 2005-05-31 to current/open; source msha-controller-operator-history