# Relationship history for MSHA mine 4407282

Current hierarchy: **Cobalt Coal LLC → Mark One Mining, Inc → Mark 1-1 Mill Creek Surface**

- 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:** C & B Coal, LLC → Mark 1-1 Mill Creek Surface; 2011-02-28 to 2013-03-18; source msha-controller-operator-history
- **controller_controls_mine:** Ron  Collins et al → Mark 1-1 Mill Creek Surface; 2011-02-28 to 2012-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Ron  Collins et al → C & B Coal, LLC; 2011-02-28 to 2012-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Vern  Bray et al → C & B Coal, LLC; 2011-02-28 to 2012-08-14; source msha-controller-operator-history
- **controller_controls_mine:** Charles L  Miller et al → Mark 1-1 Mill Creek Surface; 2012-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles L  Miller et al → C & B Coal, LLC; 2012-08-15 to 2013-03-18; source msha-controller-operator-history
- **controller_controls_operator:** Clayton Van  Roberts et al → C & B Coal, LLC; 2012-08-15 to 2013-03-18; source msha-controller-operator-history
- **operator_operates_mine:** Mill Creek Mining Inc → Mark 1-1 Mill Creek Surface; 2013-03-19 to 2019-08-28; source msha-controller-operator-history
- **controller_controls_mine:** Stanley Kenneth D Et Al → Mark 1-1 Mill Creek Surface; 2013-03-19 to 2014-05-28; source msha-controller-operator-history
- **controller_controls_operator:** Stanley Kenneth D Et Al → Mill Creek Mining Inc; 2013-03-19 to 2014-05-28; source msha-controller-operator-history
- **controller_controls_mine:** Cobalt Coal LLC → Mark 1-1 Mill Creek Surface; 2014-05-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cobalt Coal LLC → Mill Creek Mining Inc; 2014-05-29 to 2019-08-28; source msha-controller-operator-history
- **operator_operates_mine:** Mark One Mining, Inc → Mark 1-1 Mill Creek Surface; 2019-08-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cobalt Coal LLC → Mark 1-1 Mill Creek Surface; 2019-08-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cobalt Coal LLC → Mark One Mining, Inc; 2019-08-29 to current/open; source msha-controller-operator-history