# Relationship history for MSHA mine 4608393

Current hierarchy: **Brian  Cline → Albatross Mining Corp → Road Fork Mine #7 (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

- **controller_controls_mine:** Ernest E  Varney et al → Road Fork Mine #7 (1); 1989-05-01 to 2012-06-18; source msha-controller-operator-history
- **controller_controls_mine:** Richard G  Preservati II → Road Fork Mine #7 (1); 1992-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mid-Vol Leasing Inc → Road Fork Mine #7 (1); 1994-03-01 to 1995-08-02; source msha-controller-operator-history
- **controller_controls_operator:** Richard G  Preservati II → Mid-Vol Leasing Inc; 1994-03-01 to 1995-08-02; source msha-controller-operator-history
- **operator_operates_mine:** Calico Coal Inc → Road Fork Mine #7 (1); 1995-08-03 to 1997-07-30; source msha-controller-operator-history
- **controller_controls_operator:** Ernest E  Varney et al → Calico Coal Inc; 1995-08-03 to 1997-07-30; source msha-controller-operator-history
- **operator_operates_mine:** Albatross Mining Corp → Road Fork Mine #7 (1); 1997-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brian  Cline → Road Fork Mine #7 (1); 1997-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian  Cline → Albatross Mining Corp; 1997-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Estate of Ernest E Varney → Road Fork Mine #7 (1); 2012-06-19 to 2014-04-14; source msha-controller-operator-history
- **controller_controls_operator:** Estate of Ernest E Varney → Calico Coal Inc; 2012-06-19 to 1997-07-30; source msha-controller-operator-history
- **controller_controls_mine:** Cecil T  Brinager → Road Fork Mine #7 (1); 2014-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cecil T  Brinager → Calico Coal Inc; 2014-04-15 to 1997-07-30; source msha-controller-operator-history