# Relationship history for MSHA mine 1519715

Current hierarchy: **Jeffery A  Hoops → Blackjewel L.L.C. → D-12 Kellioka**

- 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:** Cumberland Resources Corporation → D-12 Kellioka; 1994-08-01 to 2010-04-18; source msha-controller-operator-history
- **controller_controls_mine:** Jeffery A  Hoops → D-12 Kellioka; 2009-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → D-12 Kellioka; 2010-04-19 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → D-12 Kellioka; 2011-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** North Fork Coal Corp → D-12 Kellioka; 2014-02-14 to 2015-07-30; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → North Fork Coal Corp; 2014-02-14 to 2015-07-30; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → North Fork Coal Corp; 2014-02-14 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Cumberland Resources Corporation → North Fork Coal Corp; 2014-02-14 to 2010-04-18; source msha-controller-operator-history
- **operator_operates_mine:** Blackjewel L.L.C. → D-12 Kellioka; 2015-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery A  Hoops → Blackjewel L.L.C.; 2015-07-31 to current/open; source msha-controller-operator-history