# Relationship history for MSHA mine 0405723

Current hierarchy: **Tony Ray  Harris → Harris Transfer, Inc. → CEMEX Lytle Creek**

- 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:** Tony Ray  Harris → CEMEX Lytle Creek; 2005-04-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Harris Transfer, Inc. → CEMEX Lytle Creek; 2007-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tony Ray  Harris → Harris Transfer, Inc.; 2007-06-04 to current/open; source msha-controller-operator-history