# Relationship history for MSHA mine 4407052

Current hierarchy: **Keri Alyssa Findley → Cumberland Coal Corporation → D-10 Dorchester**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Cumberland Resources Corporation → D-10 Dorchester; 1994-07-01 to 2010-04-18; source msha-controller-operator-history
- **controller_controls_mine:** Cumberland Resources Corporation → D-10 Dorchester; 1996-12-01 to 2010-04-18; source msha-controller-operator-history
- **operator_operates_mine:** Dorchester Enterprises, Inc. → D-10 Dorchester; 2002-07-15 to 2012-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Cumberland Resources Corporation → Dorchester Enterprises, Inc.; 2002-07-15 to 2010-04-18; source msha-controller-operator-history
- **controller_controls_mine:** Jeffery A  Hoops → D-10 Dorchester; 2009-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → D-10 Dorchester; 2010-04-19 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Dorchester Enterprises, Inc.; 2010-04-19 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → D-10 Dorchester; 2011-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Dorchester Enterprises, Inc.; 2011-06-01 to 2012-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Mill Branch Coal Corp. → D-10 Dorchester; 2013-01-01 to 2015-07-30; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Mill Branch Coal Corp.; 2013-01-01 to 2015-07-30; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Mill Branch Coal Corp.; 2013-01-01 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Cumberland Resources Corporation → Mill Branch Coal Corp.; 2013-01-01 to 2010-04-18; source msha-controller-operator-history
- **operator_operates_mine:** Blackjewel L.L.C. → D-10 Dorchester; 2015-07-31 to 2019-12-29; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery A  Hoops → Blackjewel L.L.C.; 2015-07-31 to 2019-12-29; source msha-controller-operator-history
- **controller_controls_mine:** Industrial Minerals Group LLC → D-10 Dorchester; 2019-09-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** INMET Mining, LLC. → D-10 Dorchester; 2019-12-30 to 2025-10-06; source msha-controller-operator-history
- **controller_controls_operator:** Industrial Minerals Group LLC → INMET Mining, LLC.; 2019-12-30 to 2025-10-06; source msha-controller-operator-history
- **controller_controls_mine:** Keri Alyssa Findley → D-10 Dorchester; 2025-09-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cumberland Coal Corporation → D-10 Dorchester; 2025-10-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keri Alyssa Findley → Cumberland Coal Corporation; 2025-10-07 to current/open; source msha-controller-operator-history