# Relationship history for MSHA mine 3304606

Current hierarchy: **Albert  Carapellotti; Michael  Carapellotti → Jeffco Resources, Inc. → North Barnesville**

- 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:** Jeffco Resources, Inc. → North Barnesville; 2008-05-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Carapellotti et al → North Barnesville; 2008-05-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Carapellotti et al → Jeffco Resources, Inc.; 2008-05-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Albert  Carapellotti et al → Jeffco Resources, Inc.; 2008-05-16 to current/open; source msha-controller-operator-history