# Relationship history for MSHA mine 3304103

Current hierarchy: **Noble Larry → Carl Noble & Son Inc → Noble Strip**

- 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:** Carl Noble & Son Inc → Noble Strip; 1987-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Noble Larry → Noble Strip; 1987-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Noble Larry → Carl Noble & Son Inc; 1987-05-01 to current/open; source msha-controller-operator-history