# Relationship history for MSHA mine 3102219

Current hierarchy: **James G  Waters → Waters & Waters Construction, Inc. → Francis Sand & Gravel 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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Francis Sand & Gravel Inc → Francis Sand & Gravel Mine; 2006-08-14 to 2010-04-04; source msha-controller-operator-history
- **controller_controls_mine:** Peggy V  Francis → Francis Sand & Gravel Mine; 2006-08-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peggy V  Francis → Francis Sand & Gravel Inc; 2006-08-14 to 2010-04-04; source msha-controller-operator-history
- **operator_operates_mine:** Waters & Waters Construction, Inc. → Francis Sand & Gravel Mine; 2010-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James G  Waters → Francis Sand & Gravel Mine; 2010-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James G  Waters → Waters & Waters Construction, Inc.; 2010-04-05 to current/open; source msha-controller-operator-history