# Relationship history for MSHA mine 2402277

Current hierarchy: **Gary  Linton → G.T.L. Excavating → Trommex 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

- **operator_operates_mine:** G.T.L. Excavating → Trommex Plant; 2002-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gary  Linton → Trommex Plant; 2002-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Linton → G.T.L. Excavating; 2002-04-23 to current/open; source msha-controller-operator-history