# Relationship history for MSHA mine 4601459

Current hierarchy: **Virginia Conservation Legacy Fund (VCLF) → ERP Environmental Fund, Inc. → Clear Fork Underground Mine**

- 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:** Island Creek Coal Company → Clear Fork Underground Mine; 1950-01-01 to 1990-07-01; source msha-controller-operator-history
- **controller_controls_mine:** Occidental Petroleum Corp → Clear Fork Underground Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Occidental Petroleum Corp → Island Creek Coal Company; 1950-01-01 to 1990-07-01; source msha-controller-operator-history
- **controller_controls_mine:** Hager Johnny → Clear Fork Underground Mine; 1989-12-01 to 1991-01-14; source msha-controller-operator-history
- **operator_operates_mine:** Amos Mining Inc → Clear Fork Underground Mine; 1990-07-02 to 1991-01-14; source msha-controller-operator-history
- **controller_controls_operator:** Hager Johnny → Amos Mining Inc; 1990-07-02 to 1991-01-14; source msha-controller-operator-history
- **operator_operates_mine:** Bar-Eagle Coal Company Inc → Clear Fork Underground Mine; 1991-01-15 to 1995-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Campbell B J → Clear Fork Underground Mine; 1991-01-15 to 1995-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Campbell B J → Bar-Eagle Coal Company Inc; 1991-01-15 to 1995-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Gauley Eagle Holdings Inc → Clear Fork Underground Mine; 1995-12-01 to 2002-04-14; source msha-controller-operator-history
- **controller_controls_mine:** S & P Holding Company Inc → Clear Fork Underground Mine; 1995-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** S & P Holding Company Inc → Gauley Eagle Holdings Inc; 1995-12-01 to 2002-04-14; source msha-controller-operator-history
- **operator_operates_mine:** Fossil Fuels Inc → Clear Fork Underground Mine; 2002-04-15 to 2005-06-09; source msha-controller-operator-history
- **controller_controls_mine:** James E  Trent → Clear Fork Underground Mine; 2002-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James E  Trent → Fossil Fuels Inc; 2002-04-15 to 2005-06-09; source msha-controller-operator-history
- **operator_operates_mine:** Atlantic Leaseco, LLC → Clear Fork Underground Mine; 2005-06-10 to 2016-04-10; source msha-controller-operator-history
- **controller_controls_mine:** Cambrian Mining PLC → Clear Fork Underground Mine; 2005-06-10 to 2011-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Cambrian Mining PLC → Atlantic Leaseco, LLC; 2005-06-10 to 2011-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Walter Energy Incorporated → Clear Fork Underground Mine; 2011-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Walter Energy Incorporated → Atlantic Leaseco, LLC; 2011-04-01 to 2016-04-10; source msha-controller-operator-history
- **controller_controls_mine:** Virginia Conservation Legacy Fund (VCLF) → Clear Fork Underground Mine; 2015-10-28 to 2017-01-25; source msha-controller-operator-history
- **operator_operates_mine:** ERP Environmental Fund, Inc. → Clear Fork Underground Mine; 2016-04-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Virginia Conservation Legacy Fund (VCLF) → ERP Environmental Fund, Inc.; 2016-04-11 to 2017-01-25; source msha-controller-operator-history
- **controller_controls_mine:** Kissito Healthcare Inc → Clear Fork Underground Mine; 2017-01-26 to 2018-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Kissito Healthcare Inc → ERP Environmental Fund, Inc.; 2017-01-26 to 2018-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Virginia Conservation Legacy Fund (VCLF) → Clear Fork Underground Mine; 2019-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Virginia Conservation Legacy Fund (VCLF) → ERP Environmental Fund, Inc.; 2019-01-01 to current/open; source msha-controller-operator-history