# Relationship history for MSHA mine 1800761

Current hierarchy: **Alliance Resource Partners LP → Backbone Mountain, LLC → Steyer II**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Backbone Mountain LLC → Steyer II; 2003-08-15 to 2004-05-24; source msha-controller-operator-history
- **controller_controls_mine:** Alliance Resource Partners LP → Steyer II; 2003-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alliance Resource Partners LP → Backbone Mountain LLC; 2003-08-15 to 2004-05-24; source msha-controller-operator-history
- **operator_operates_mine:** Steyer Fuel Mining Co Inc → Steyer II; 2004-05-25 to 2014-12-15; source msha-controller-operator-history
- **controller_controls_mine:** David M  Maynard → Steyer II; 2004-05-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David M  Maynard → Steyer Fuel Mining Co Inc; 2004-05-25 to 2014-12-15; source msha-controller-operator-history
- **operator_operates_mine:** Backbone Mountain, LLC → Steyer II; 2014-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alliance Resource Partners LP → Backbone Mountain, LLC; 2014-12-16 to current/open; source msha-controller-operator-history