# Relationship history for MSHA mine 1518851

Current hierarchy: **Ray E  Collett; Richard  L  Collett → C & L Highwall Mining → Hazard 107**

- 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:** Ray E  Collett  et al → Hazard 107; 2000-04-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dataem Industries LLC → Hazard 107; 2005-03-01 to 2008-12-01; source msha-controller-operator-history
- **controller_controls_operator:** Ray E  Collett  et al → Dataem Industries LLC; 2005-03-01 to 2008-12-01; source msha-controller-operator-history
- **controller_controls_operator:** Richard  L  Collett  et al → Dataem Industries LLC; 2005-03-01 to 2008-12-01; source msha-controller-operator-history
- **operator_operates_mine:** C & L Highwall Mining Company → Hazard 107; 2008-12-02 to 2008-12-29; source msha-controller-operator-history
- **controller_controls_mine:** Richard  L  Collett  et al → Hazard 107; 2008-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  L  Collett  et al → C & L Highwall Mining Company; 2008-12-02 to 2008-12-29; source msha-controller-operator-history
- **controller_controls_operator:** Ray E  Collett  et al → C & L Highwall Mining Company; 2008-12-02 to 2008-12-29; source msha-controller-operator-history
- **operator_operates_mine:** Dataem Industries LLC → Hazard 107; 2008-12-30 to 2013-06-11; source msha-controller-operator-history
- **controller_controls_operator:** Richard  L  Collett  et al → Dataem Industries LLC; 2008-12-30 to 2013-06-11; source msha-controller-operator-history
- **controller_controls_operator:** Ray E  Collett  et al → Dataem Industries LLC; 2008-12-30 to 2013-06-11; source msha-controller-operator-history
- **operator_operates_mine:** C & L Highwall Mining → Hazard 107; 2013-06-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ray E  Collett  et al → C & L Highwall Mining; 2013-06-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  L  Collett  et al → C & L Highwall Mining; 2013-06-12 to current/open; source msha-controller-operator-history