# Relationship history for MSHA mine 4608131

Current hierarchy: **Cleveland-Cliffs Inc → Twin State Mining, Inc. → Mine No. 35**

- 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:** Long Branch Mining Inc → Mine No. 35; 1991-12-01 to 2000-06-25; source msha-controller-operator-history
- **controller_controls_mine:** William G  Skewes → Mine No. 35; 1991-12-01 to 2000-06-25; source msha-controller-operator-history
- **controller_controls_operator:** William G  Skewes → Long Branch Mining Inc; 1991-12-01 to 2000-06-25; source msha-controller-operator-history
- **controller_controls_mine:** Amon L  Mahon → Mine No. 35; 1994-11-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Island Fork Construction Ltd → Mine No. 35; 2000-06-26 to 2002-10-16; source msha-controller-operator-history
- **controller_controls_operator:** Amon L  Mahon → Island Fork Construction Ltd; 2000-06-26 to 2002-10-16; source msha-controller-operator-history
- **operator_operates_mine:** XMV, Inc. → Mine No. 35; 2002-10-17 to 2021-11-17; source msha-controller-operator-history
- **controller_controls_mine:** William G  Skewes → Mine No. 35; 2002-10-17 to 2008-10-19; source msha-controller-operator-history
- **controller_controls_operator:** William G  Skewes → XMV, Inc.; 2002-10-17 to 2008-10-19; source msha-controller-operator-history
- **controller_controls_mine:** Gregory  Jessee et al → Mine No. 35; 2006-10-10 to 2008-12-04; source msha-controller-operator-history
- **controller_controls_mine:** ArcelorMittal → Mine No. 35; 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:** ArcelorMittal → Mine No. 35; 2008-12-05 to 2020-12-08; source msha-controller-operator-history
- **controller_controls_mine:** Cleveland-Cliffs Inc → Mine No. 35; 2020-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cleveland-Cliffs Inc → XMV, Inc.; 2020-12-09 to 2021-11-17; source msha-controller-operator-history
- **operator_operates_mine:** Twin State Mining, Inc. → Mine No. 35; 2021-11-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gregory  Jessee et al → Twin State Mining, Inc.; 2021-11-18 to 2008-12-04; source msha-controller-operator-history
- **controller_controls_operator:** ArcelorMittal → Twin State Mining, Inc.; 2021-11-18 to 2020-12-08; source msha-controller-operator-history
- **controller_controls_operator:** Cleveland-Cliffs Inc → Twin State Mining, Inc.; 2021-11-18 to current/open; source msha-controller-operator-history