# Relationship history for MSHA mine 1502240

Current hierarchy: **Scarlett  Biliter → Solar Coal Co. LLC → #1**

- 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:** Premium Elkhorn Coal Corp → #1; 1950-01-01 to 1983-10-26; source msha-controller-operator-history
- **controller_controls_mine:** Nick A  Cooley et al → #1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nick A  Cooley et al → Premium Elkhorn Coal Corp; 1950-01-01 to 1983-10-26; source msha-controller-operator-history
- **operator_operates_mine:** Barnette Coal Enterprises Inc → #1; 1983-10-27 to 1991-12-01; source msha-controller-operator-history
- **controller_controls_mine:** Roger D  Barnette → #1; 1983-10-27 to 1991-12-01; source msha-controller-operator-history
- **controller_controls_operator:** Roger D  Barnette → Barnette Coal Enterprises Inc; 1983-10-27 to 1991-12-01; source msha-controller-operator-history
- **controller_controls_mine:** Nick A  Cooley et al → #1; 1985-11-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gap Fork Fuels Inc → #1; 1991-12-02 to 2001-10-16; source msha-controller-operator-history
- **controller_controls_operator:** Nick A  Cooley et al → Gap Fork Fuels Inc; 1991-12-02 to 2001-10-16; source msha-controller-operator-history
- **controller_controls_mine:** John P  Biliter → #1; 2000-06-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Star  Coal Trucking, Inc. → #1; 2001-10-17 to 2005-01-04; source msha-controller-operator-history
- **controller_controls_operator:** John P  Biliter → Star  Coal Trucking, Inc.; 2001-10-17 to 2005-01-04; source msha-controller-operator-history
- **operator_operates_mine:** Solar Coal Co. LLC → #1; 2005-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Scarlett  Biliter → #1; 2005-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scarlett  Biliter → Solar Coal Co. LLC; 2005-01-05 to current/open; source msha-controller-operator-history