# Relationship history for MSHA mine 4002915

Current hierarchy: **Collins Ted → King Solomon Mining Inc → T & T Contractor**

- 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:** King Solomon Mining Inc → T & T Contractor; 1986-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Collins Ted Et Al → T & T Contractor; 1986-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Collins Ted Et Al → King Solomon Mining Inc; 1986-04-01 to current/open; source msha-controller-operator-history