# Relationship history for MSHA mine 0801315

Current hierarchy: **Donovan  Davis Jr → Brevard Land Materials → Boruch - David**

- 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:** Brevard Land Materials → Boruch - David; 2002-12-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Donovan  Davis Jr → Boruch - David; 2002-12-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donovan  Davis Jr → Brevard Land Materials; 2002-12-03 to current/open; source msha-controller-operator-history