# Relationship history for MSHA mine 4104002

Current hierarchy: **John H  Waters → Cimbar Resources, Inc. → Corpus Christi 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Milwhite Inc → Corpus Christi Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Newpark Resources Inc → Corpus Christi Plant; 1997-09-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Milwhite Inc → Corpus Christi Plant; 1998-03-01 to 2001-04-06; source msha-controller-operator-history
- **controller_controls_operator:** Milwhite Inc → Milwhite Inc; 1998-03-01 to 2001-04-06; source msha-controller-operator-history
- **operator_operates_mine:** Excalibar Minerals LLC → Corpus Christi Plant; 2001-04-07 to 2022-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Newpark Resources Inc → Excalibar Minerals LLC; 2001-04-07 to 2022-11-30; source msha-controller-operator-history
- **controller_controls_mine:** John H  Waters → Corpus Christi Plant; 2022-09-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cimbar Resources, Inc. → Corpus Christi Plant; 2022-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John H  Waters → Cimbar Resources, Inc.; 2022-12-01 to current/open; source msha-controller-operator-history