# Relationship history for MSHA mine 1519522

Current hierarchy: **David D  Bundy; Robert  Williams → Viking Remining LLC → Refuse 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Viking Remining LLC → Refuse Mine; 2010-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Williams et al → Refuse Mine; 2010-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Williams et al → Viking Remining LLC; 2010-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David D  Bundy et al → Viking Remining LLC; 2010-07-28 to current/open; source msha-controller-operator-history