# Relationship history for MSHA mine 1519601

Current hierarchy: **Ray E  Collett; Richard  L  Collett → C & L Highwall Mining Partnership → Sterling-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:** Richard  L  Collett  et al → Sterling-107; 2008-12-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** L C & C Energy Incorporated → Sterling-107; 2011-06-22 to 2012-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Richard  L  Collett  et al → L C & C Energy Incorporated; 2011-06-22 to 2012-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Ray E  Collett  et al → L C & C Energy Incorporated; 2011-06-22 to 2012-10-15; source msha-controller-operator-history
- **operator_operates_mine:** C & L Highwall Mining Partnership → Sterling-107; 2012-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  L  Collett  et al → C & L Highwall Mining Partnership; 2012-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ray E  Collett  et al → C & L Highwall Mining Partnership; 2012-10-16 to current/open; source msha-controller-operator-history