# Relationship history for MSHA mine 4607208

Current hierarchy: **Cleveland-Cliffs Inc → XMV, Inc. → Black Wolf Washer/Loadout**

- 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:** Benefactors Inc → Black Wolf Washer/Loadout; 1986-10-01 to 2000-03-19; source msha-controller-operator-history
- **controller_controls_mine:** William G  Skewes → Black Wolf Washer/Loadout; 1986-10-01 to 2000-03-19; source msha-controller-operator-history
- **controller_controls_operator:** William G  Skewes → Benefactors Inc; 1986-10-01 to 2000-03-19; source msha-controller-operator-history
- **controller_controls_mine:** Amon L  Mahon → Black Wolf Washer/Loadout; 1994-11-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Island Fork Construction Ltd → Black Wolf Washer/Loadout; 2000-03-20 to 2002-10-16; source msha-controller-operator-history
- **controller_controls_operator:** Amon L  Mahon → Island Fork Construction Ltd; 2000-03-20 to 2002-10-16; source msha-controller-operator-history
- **controller_controls_mine:** William G  Skewes → Black Wolf Washer/Loadout; 2002-10-17 to 2008-10-19; source msha-controller-operator-history
- **operator_operates_mine:** XRC, Inc. → Black Wolf Washer/Loadout; 2002-10-17 to 2002-12-10; source msha-controller-operator-history
- **controller_controls_mine:** William G  Skewes → Black Wolf Washer/Loadout; 2002-10-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William G  Skewes → XRC, Inc.; 2002-10-17 to 2002-12-10; source msha-controller-operator-history
- **operator_operates_mine:** XMV, Inc. → Black Wolf Washer/Loadout; 2002-12-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William G  Skewes → XMV, Inc.; 2002-12-11 to 2008-10-19; source msha-controller-operator-history
- **controller_controls_mine:** ArcelorMittal → Black Wolf Washer/Loadout; 2008-10-20 to 2020-12-08; source msha-controller-operator-history
- **controller_controls_operator:** ArcelorMittal → XMV, Inc.; 2008-10-20 to 2020-12-08; source msha-controller-operator-history
- **controller_controls_mine:** Cleveland-Cliffs Inc → Black Wolf Washer/Loadout; 2020-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cleveland-Cliffs Inc → XMV, Inc.; 2020-12-09 to current/open; source msha-controller-operator-history