# Relationship history for MSHA mine 3607278

Current hierarchy: **James  Popple; Victoria  Popple → Popple Brothers → Erie R R Bank Operation**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Victoria  Popple et al → Erie R R Bank Operation; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Popple Brothers → Erie R R Bank Operation; 1982-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Victoria  Popple et al → Popple Brothers; 1982-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Popple et al → Popple Brothers; 1982-03-01 to current/open; source msha-controller-operator-history