# Relationship history for MSHA mine 4202723

Current hierarchy: **Brett M  Lloyd; Mark K  Lloyd → MVC Const Co Inc → SCV**

- 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:** Mark K  Lloyd et al → SCV; 2006-06-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** MVC Const Co Inc → SCV; 2021-02-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark K  Lloyd et al → MVC Const Co Inc; 2021-02-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brett M  Lloyd et al → MVC Const Co Inc; 2021-02-23 to current/open; source msha-controller-operator-history