# Relationship history for MSHA mine 0504819

Current hierarchy: **Mike D  Shumway → Liberty Mining LLC → Liberty 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:** Liberty Mining, LLC → Liberty Mine; 2005-06-07 to 2008-02-27; source msha-controller-operator-history
- **controller_controls_mine:** Chris B  Carter et al → Liberty Mine; 2005-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chris B  Carter et al → Liberty Mining, LLC; 2005-06-07 to 2008-02-27; source msha-controller-operator-history
- **controller_controls_operator:** Jick V  Taylor et al → Liberty Mining, LLC; 2005-06-07 to 2008-02-27; source msha-controller-operator-history
- **controller_controls_mine:** Mike D  Shumway et al → Liberty Mine; 2005-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Blue Rock Resources Ltd → Liberty Mine; 2007-11-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Blue Rock Energy Corp → Liberty Mine; 2008-02-28 to 2012-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Blue Rock Resources Ltd → Blue Rock Energy Corp; 2008-02-28 to 2012-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Liberty Mining LLC → Liberty Mine; 2012-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike D  Shumway et al → Liberty Mining LLC; 2012-11-01 to current/open; source msha-controller-operator-history