# Relationship history for MSHA mine 1200030

Current hierarchy: **Polycor Inc → IN Limestone Co. → Palestine 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:** Evans Quarries Incorporated → Palestine Quarry; 1950-01-01 to 2022-06-28; source msha-controller-operator-history
- **controller_controls_mine:** Larry G  Evans → Palestine Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry G  Evans → Evans Quarries Incorporated; 1950-01-01 to 2022-06-28; source msha-controller-operator-history
- **controller_controls_mine:** Limestone Holdings Corporation → Palestine Quarry; 2014-05-02 to 2014-05-12; source msha-controller-operator-history
- **controller_controls_mine:** Wynnchurch Capital → Palestine Quarry; 2014-05-13 to 2018-10-10; source msha-controller-operator-history
- **controller_controls_mine:** Polycor Inc → Palestine Quarry; 2018-10-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** IN Limestone Co. → Palestine Quarry; 2022-06-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Limestone Holdings Corporation → IN Limestone Co.; 2022-06-29 to 2014-05-12; source msha-controller-operator-history
- **controller_controls_operator:** Wynnchurch Capital → IN Limestone Co.; 2022-06-29 to 2018-10-10; source msha-controller-operator-history
- **controller_controls_operator:** Polycor Inc → IN Limestone Co.; 2022-06-29 to current/open; source msha-controller-operator-history