# Relationship history for MSHA mine 1518537

Current hierarchy: **Michael  Hall; Damian  Hall et  al → D & M Land Works, LLC → # 1**

- 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:** D & M Land Works, LLC → # 1; 2002-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Damian  Hall et  al → # 1; 2002-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Damian  Hall et  al → D & M Land Works, LLC; 2002-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Hall et al → D & M Land Works, LLC; 2002-04-16 to current/open; source msha-controller-operator-history