# Relationship history for MSHA mine 1103133

Current hierarchy: **Joseph F  Lamb → Ashford Industries Inc. → Ashford Industries, Monticello Division**

- 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:** Ashford Industries Inc. → Ashford Industries, Monticello Division; 2004-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joseph F  Lamb → Ashford Industries, Monticello Division; 2004-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph F  Lamb → Ashford Industries Inc.; 2004-07-14 to current/open; source msha-controller-operator-history