# Relationship history for MSHA mine 0301971

Current hierarchy: **Richard  Carl; Kenneth  George → Tn Ar Materials Corporation → Mayflower 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Mayflower Aggregates LLC → Mayflower Mine; 2008-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Carl et al → Mayflower Mine; 2008-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Carl et al → Mayflower Aggregates LLC; 2008-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth  George et al → Mayflower Aggregates LLC; 2008-07-28 to current/open; source msha-controller-operator-history