# Relationship history for MSHA mine 1601411

Current hierarchy: **John  Daley → Daley Sand & Gravel, Inc. → Daley Sand & Gravel**

- 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:** John  Daley  et al → Daley Sand & Gravel; 2000-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Daley Sand & Gravel, Inc. → Daley Sand & Gravel; 2004-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Daley  et al → Daley Sand & Gravel, Inc.; 2004-05-17 to current/open; source msha-controller-operator-history