# Relationship history for MSHA mine 3402000

Current hierarchy: **Robert G  Thompson → Green Country Stone, Inc. → Green Country Stone #2**

- 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:** Robert G  Thompson → Green Country Stone #2; 1992-08-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Green Country Stone, Inc. → Green Country Stone #2; 2006-02-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert G  Thompson → Green Country Stone, Inc.; 2006-02-25 to current/open; source msha-controller-operator-history