# Relationship history for MSHA mine 4406007

Current hierarchy: **Alpha Metallurgical Resources Inc → Dickenson-Russell Contura, LLC → Moss No 2 Prep Plt**

- 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:** Pittston Company → Moss No 2 Prep Plt; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Clinchfield Coal Company → Moss No 2 Prep Plt; 1983-07-01 to 2018-03-22; source msha-controller-operator-history
- **controller_controls_operator:** Pittston Company → Clinchfield Coal Company; 1983-07-01 to 2018-03-22; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Metallurgical Resources Inc → Moss No 2 Prep Plt; 2016-07-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dickenson-Russell Contura, LLC → Moss No 2 Prep Plt; 2018-03-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Metallurgical Resources Inc → Dickenson-Russell Contura, LLC; 2018-03-23 to current/open; source msha-controller-operator-history