# Relationship history for MSHA mine 1001792

Current hierarchy: **Bradley A  Pugh → Pugh Brothers Construction Inc → Eagle Silver**

- 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:** Bradley A  Pugh et al → Eagle Silver; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pugh Brothers Construction Inc → Eagle Silver; 1987-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bradley A  Pugh et al → Pugh Brothers Construction Inc; 1987-07-01 to current/open; source msha-controller-operator-history