# Relationship history for MSHA mine 4407270

Current hierarchy: **Robin Roy Belcher → PB Dirt Movers, Inc → Surface Mine No. 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Robin Roy Belcher → Surface Mine No. 1; 1980-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth L  Stacy → Surface Mine No. 1; 2001-08-01 to 2006-02-09; source msha-controller-operator-history
- **controller_controls_mine:** United  Company → Surface Mine No. 1; 2006-02-10 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Metinvest B V → Surface Mine No. 1; 2009-04-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Surface Minerals Company → Surface Mine No. 1; 2010-04-23 to 2014-02-18; source msha-controller-operator-history
- **controller_controls_operator:** Metinvest B V → Surface Minerals Company; 2010-04-23 to 2014-02-18; source msha-controller-operator-history
- **controller_controls_operator:** United  Company → Surface Minerals Company; 2010-04-23 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth L  Stacy → Surface Minerals Company; 2010-04-23 to 2006-02-09; source msha-controller-operator-history
- **operator_operates_mine:** PB Dirt Movers, Inc → Surface Mine No. 1; 2014-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robin Roy Belcher → PB Dirt Movers, Inc; 2014-02-19 to current/open; source msha-controller-operator-history