# Relationship history for MSHA mine 0801390

Current hierarchy: **Marty G  Sanchez → Sanchez Chesser, Inc. → Sanchez Mine**

- 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

- **operator_operates_mine:** Sanchez Chesser, Inc. → Sanchez Mine; 2012-04-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Marty G  Sanchez → Sanchez Mine; 2012-04-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marty G  Sanchez → Sanchez Chesser, Inc.; 2012-04-09 to current/open; source msha-controller-operator-history