# Relationship history for MSHA mine 2700468

Current hierarchy: **Stephen G  Mariano → Stephen Mariano → Stephen Mariano**

- 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

- **operator_operates_mine:** S & S Sand & Gravel → Stephen Mariano; 2012-11-29 to 2014-05-05; source msha-controller-operator-history
- **controller_controls_mine:** Stephen  Lowe → Stephen Mariano; 2012-11-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephen  Lowe → S & S Sand & Gravel; 2012-11-29 to 2014-05-05; source msha-controller-operator-history
- **operator_operates_mine:** Stephen Mariano → Stephen Mariano; 2014-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stephen G  Mariano → Stephen Mariano; 2014-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephen G  Mariano → Stephen Mariano; 2014-05-06 to current/open; source msha-controller-operator-history