# Relationship history for MSHA mine 4608959

Current hierarchy: **Kenneth R  Calloway → Chief Mining, Inc. → No 4 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

- **controller_controls_mine:** Calloway Kevin B → No 4 Mine; 1995-08-01 to 2003-11-11; source msha-controller-operator-history
- **controller_controls_mine:** James E  Trent → No 4 Mine; 2000-08-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas W  Lusk → No 4 Mine; 2001-06-22 to 2005-01-11; source msha-controller-operator-history
- **controller_controls_mine:** Darvin  Rowe et al → No 4 Mine; 2002-02-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Century Energy Corporation → No 4 Mine; 2002-04-23 to 2003-08-17; source msha-controller-operator-history
- **controller_controls_operator:** James E  Trent → Century Energy Corporation; 2002-04-23 to 2003-08-17; source msha-controller-operator-history
- **operator_operates_mine:** Shelby Coal, Inc. → No 4 Mine; 2003-08-18 to 2007-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Jennifer N  Szakacs → No 4 Mine; 2003-08-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jennifer N  Szakacs → Shelby Coal, Inc.; 2003-08-18 to 2007-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth R  Calloway → No 4 Mine; 2003-11-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** MELISSA  CLINE → No 4 Mine; 2005-01-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Shelby Coal, Inc. → No 4 Mine; 2007-07-26 to 2008-04-14; source msha-controller-operator-history
- **controller_controls_mine:** Dennis B  Hagerman → No 4 Mine; 2007-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dennis B  Hagerman → Shelby Coal, Inc.; 2007-07-26 to 2008-04-14; source msha-controller-operator-history
- **operator_operates_mine:** Resurrection Coal Company → No 4 Mine; 2008-04-15 to 2009-02-18; source msha-controller-operator-history
- **controller_controls_operator:** Darvin  Rowe et al → Resurrection Coal Company; 2008-04-15 to 2009-02-18; source msha-controller-operator-history
- **operator_operates_mine:** Glow Worm Coal Company → No 4 Mine; 2009-02-19 to 2012-01-08; source msha-controller-operator-history
- **controller_controls_operator:** MELISSA  CLINE → Glow Worm Coal Company; 2009-02-19 to 2012-01-08; source msha-controller-operator-history
- **controller_controls_operator:** Thomas W  Lusk → Glow Worm Coal Company; 2009-02-19 to 2005-01-11; source msha-controller-operator-history
- **operator_operates_mine:** Chief Mining, Inc. → No 4 Mine; 2012-01-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth R  Calloway → Chief Mining, Inc.; 2012-01-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Calloway Kevin B → Chief Mining, Inc.; 2012-01-09 to 2003-11-11; source msha-controller-operator-history