# Relationship history for MSHA mine 1519146

Current hierarchy: **John A  Collins; Kenneth  Whitt → Ember Energy, LLC → Diablo West 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Anthony  Frederick et al → Diablo West Surface; 2000-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Associated Contracting, LLC → Diablo West Surface; 2007-10-12 to 2009-07-27; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  Frederick et al → Associated Contracting, LLC; 2007-10-12 to 2009-07-27; source msha-controller-operator-history
- **controller_controls_operator:** Rifle Coal Company et al → Associated Contracting, LLC; 2007-10-12 to 2009-07-27; source msha-controller-operator-history
- **controller_controls_mine:** U S Coal Corporation → Diablo West Surface; 2009-07-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Licking River Mining LLC → Diablo West Surface; 2009-07-28 to 2015-04-23; source msha-controller-operator-history
- **controller_controls_operator:** U S Coal Corporation → Licking River Mining LLC; 2009-07-28 to 2015-04-23; source msha-controller-operator-history
- **operator_operates_mine:** Ember Energy, LLC → Diablo West Surface; 2015-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John A  Collins et al → Diablo West Surface; 2015-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John A  Collins et al → Ember Energy, LLC; 2015-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth  Whitt et al → Ember Energy, LLC; 2015-04-24 to current/open; source msha-controller-operator-history