# Relationship history for MSHA mine 2602239

Current hierarchy: **Halliburton Company → Halliburton Energy Services, Inc. → Rossi Jig 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:** Terral G  Young → Rossi Jig Plant; 1990-06-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mine Service & Supply Company Inc → Rossi Jig Plant; 1993-10-01 to 2002-04-15; source msha-controller-operator-history
- **controller_controls_operator:** Terral G  Young → Mine Service & Supply Company Inc; 1993-10-01 to 2002-04-15; source msha-controller-operator-history
- **controller_controls_mine:** Halliburton Company → Rossi Jig Plant; 1998-02-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Halliburton Energy Services, Inc. → Rossi Jig Plant; 2002-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Halliburton Company → Halliburton Energy Services, Inc.; 2002-04-16 to current/open; source msha-controller-operator-history