# Relationship history for MSHA mine 0901203

Current hierarchy: **John H  Waters → Cimbar Resources Inc → Chatsworth Plant**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Halliburton Company → Chatsworth Plant; 1998-02-26 to 2003-11-30; source msha-controller-operator-history
- **controller_controls_mine:** John H  Waters → Chatsworth Plant; 2003-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cimbar Performance Minerals, Inc. → Chatsworth Plant; 2010-06-23 to 2022-09-26; source msha-controller-operator-history
- **controller_controls_operator:** Halliburton Company → Cimbar Performance Minerals, Inc.; 2010-06-23 to 2003-11-30; source msha-controller-operator-history
- **controller_controls_operator:** John H  Waters → Cimbar Performance Minerals, Inc.; 2010-06-23 to 2022-09-26; source msha-controller-operator-history
- **operator_operates_mine:** Cimbar Resources Inc → Chatsworth Plant; 2022-09-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John H  Waters → Chatsworth Plant; 2022-09-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John H  Waters → Cimbar Resources Inc; 2022-09-27 to current/open; source msha-controller-operator-history