# Relationship history for MSHA mine 1519801

Current hierarchy: **Mark  LaVerghetta → Management Consulting Services LLC → CARNEGIE 2**

- 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:** Quest Energy Corporation → CARNEGIE 2; 2016-02-17 to 2019-10-08; source msha-controller-operator-history
- **operator_operates_mine:** MCCOY ELKHORN COAL CO. → CARNEGIE 2; 2016-12-06 to 2022-06-09; source msha-controller-operator-history
- **controller_controls_operator:** Quest Energy Corporation → MCCOY ELKHORN COAL CO.; 2016-12-06 to 2019-10-08; source msha-controller-operator-history
- **controller_controls_mine:** American Resources Corporation → CARNEGIE 2; 2019-10-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** American Resources Corporation → MCCOY ELKHORN COAL CO.; 2019-10-09 to 2022-06-09; source msha-controller-operator-history
- **controller_controls_mine:** Mark  LaVerghetta → CARNEGIE 2; 2021-03-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Management Consulting Services LLC → CARNEGIE 2; 2022-06-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  LaVerghetta → Management Consulting Services LLC; 2022-06-10 to current/open; source msha-controller-operator-history