# Relationship history for MSHA mine 4003455

Current hierarchy: **Randall L Neal → BMJ Stone Company, LLC → Mountain Valley**

- 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:** Neal and Sons Stone → Mountain Valley; 2016-05-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Randall L Neal → Mountain Valley; 2016-05-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randall L Neal → Neal and Sons Stone; 2016-05-11 to current/open; source msha-controller-operator-history