# Relationship history for MSHA mine 1519678

Current hierarchy: **John A  Collins; Kenneth  Whitt → Ember Energy, LLC → JC-1**

- 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:** James T  Stephens  et al → JC-1; 2008-01-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David A  Wright → JC-1; 2008-04-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Blackstone Coal Company, LLC → JC-1; 2012-09-11 to 2016-02-08; source msha-controller-operator-history
- **controller_controls_operator:** James T  Stephens  et al → Blackstone Coal Company, LLC; 2012-09-11 to 2016-02-08; source msha-controller-operator-history
- **controller_controls_operator:** Paul  Alexander  et al → Blackstone Coal Company, LLC; 2012-09-11 to 2016-02-08; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth  Whitt et al → JC-1; 2015-04-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ridgeline Coal LLC → JC-1; 2016-02-09 to 2016-08-08; source msha-controller-operator-history
- **controller_controls_operator:** David A  Wright → Ridgeline Coal LLC; 2016-02-09 to 2016-08-08; source msha-controller-operator-history
- **operator_operates_mine:** Ember Energy, LLC → JC-1; 2016-08-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth  Whitt et al → Ember Energy, LLC; 2016-08-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John A  Collins et al → Ember Energy, LLC; 2016-08-09 to current/open; source msha-controller-operator-history