# Relationship history for MSHA mine 0202368

Current hierarchy: **John H  Waters → Cimbar Resources → Santa Rita Plan**

- 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

- **controller_controls_mine:** Minerals Technologies Inc → Santa Rita Plan; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Calcium Products Of Arizona → Santa Rita Plan; 1987-04-01 to 1991-12-22; source msha-controller-operator-history
- **controller_controls_mine:** Jenott Mining Inc → Santa Rita Plan; 1987-04-01 to 1991-12-22; source msha-controller-operator-history
- **controller_controls_operator:** Jenott Mining Inc → Calcium Products Of Arizona; 1987-04-01 to 1991-12-22; source msha-controller-operator-history
- **controller_controls_mine:** Imerys S A → Santa Rita Plan; 1989-05-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Specialty Minerals Inc → Santa Rita Plan; 1991-12-23 to 1997-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Minerals Technologies Inc → Specialty Minerals Inc; 1991-12-23 to 1997-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Imerys Carbonates USA, Inc. → Santa Rita Plan; 1997-12-01 to 2022-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Imerys S A → Imerys Carbonates USA, Inc.; 1997-12-01 to 2022-11-30; source msha-controller-operator-history
- **controller_controls_mine:** John H  Waters → Santa Rita Plan; 2022-09-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cimbar Resources → Santa Rita Plan; 2022-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John H  Waters → Cimbar Resources; 2022-12-01 to current/open; source msha-controller-operator-history