# Relationship history for MSHA mine 3001367

Current hierarchy: **Edward N  Pompa → POMPA BROS INC. → POMPA BROS INC.**

- 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:** Pompa Bros Inc. → POMPA BROS INC.; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Edward N  Pompa Et Al → POMPA BROS INC.; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward N  Pompa Et Al → Pompa Bros Inc.; 1950-01-01 to current/open; source msha-controller-operator-history