# Relationship history for MSHA mine 1002114

Current hierarchy: **Troy D  Hicks → Rockin' T Contruction Inc. → Rockin' T Portable**

- 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:** Rockin' T Contruction Inc. → Rockin' T Portable; 2007-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Troy D  Hicks → Rockin' T Portable; 2007-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Troy D  Hicks → Rockin' T Contruction Inc.; 2007-05-04 to current/open; source msha-controller-operator-history