# Relationship history for MSHA mine 4202793

Current hierarchy: **Neil M  Bradshaw → Stone Plus → The Black**

- 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

- **controller_controls_mine:** Neil M  Bradshaw → The Black; 2012-05-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Stone Plus → The Black; 2025-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Neil M  Bradshaw → Stone Plus; 2025-09-15 to current/open; source msha-controller-operator-history