# Relationship history for MSHA mine 4503585

Current hierarchy: **Alan C  Hille → Connell Sand & Gravel, Inc. → CSG Sandpit**

- 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:** Alan C  Hille → CSG Sandpit; 1993-06-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Connell Sand & Gravel, Inc. → CSG Sandpit; 2005-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alan C  Hille → Connell Sand & Gravel, Inc.; 2005-07-27 to current/open; source msha-controller-operator-history