# Relationship history for MSHA mine 1518617

Current hierarchy: **Michael  Hall; Damian  Hall et  al → D & M Land Works, LLC → Stone Cove 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:** Damian  Hall et  al → Stone Cove Mine; 2002-04-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** D & M Land Works, LLC → Stone Cove Mine; 2003-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Damian  Hall et  al → D & M Land Works, LLC; 2003-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Hall et al → D & M Land Works, LLC; 2003-03-24 to current/open; source msha-controller-operator-history