# Relationship history for MSHA mine 0901093

Current hierarchy: **J M Huber Corp → Huber Carbonates LLC. → Miss Linda Mine**

- 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

- **controller_controls_mine:** J M Huber Corp → Miss Linda Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J M Huber Corp → Miss Linda Mine; 1995-11-01 to 2014-12-31; source msha-controller-operator-history
- **controller_controls_operator:** J M Huber Corp → J M Huber Corp; 1995-11-01 to 2014-12-31; source msha-controller-operator-history
- **controller_controls_mine:** J M Huber Corp → Miss Linda Mine; 2014-12-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Huber Carbonates LLC. → Miss Linda Mine; 2015-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** J M Huber Corp → Huber Carbonates LLC.; 2015-01-01 to current/open; source msha-controller-operator-history