# Relationship history for MSHA mine 4407280

Current hierarchy: **John T  Quintrell → Civil, LLC → S-5 Ailly Branch**

- 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:** Jeffery A  Hoops → S-5 Ailly Branch; 2009-05-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Blackjewel L.L.C. → S-5 Ailly Branch; 2011-02-15 to 2020-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery A  Hoops → Blackjewel L.L.C.; 2011-02-15 to 2020-04-30; source msha-controller-operator-history
- **controller_controls_mine:** John T  Quintrell → S-5 Ailly Branch; 2019-09-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Civil, LLC → S-5 Ailly Branch; 2020-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John T  Quintrell → Civil, LLC; 2020-05-01 to current/open; source msha-controller-operator-history