# Relationship history for MSHA mine 4104952

Current hierarchy: **Carl R  Adams; Marilyn K  Brister → Greater Texas Stone LLC → Greater Texas Stone/Rocking U**

- 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

- **operator_operates_mine:** Greater Texas Stone LLC → Greater Texas Stone/Rocking U; 2012-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Carl R  Adams et al → Greater Texas Stone/Rocking U; 2012-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carl R  Adams et al → Greater Texas Stone LLC; 2012-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marilyn K  Brister et al → Greater Texas Stone LLC; 2012-07-10 to current/open; source msha-controller-operator-history