# Relationship history for MSHA mine 3609307

Current hierarchy: **Thomas K  Lampert → Newgate Development Corp. → Newgate**

- 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

- **controller_controls_mine:** Thomas K  Lampert → Newgate; 2004-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Newgate Development Corp. → Newgate; 2005-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas K  Lampert → Newgate Development Corp.; 2005-01-01 to current/open; source msha-controller-operator-history