# Relationship history for MSHA mine 4104258

Current hierarchy: **Joel R  Stringfellow → Stringfellow Materials → Nick Ciaccio & Son Sand Pit**

- 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:** Ciaccio & Son Sand Pit → Nick Ciaccio & Son Sand Pit; 2001-02-01 to 2007-11-04; source msha-controller-operator-history
- **controller_controls_mine:** Nick  Ciaccio → Nick Ciaccio & Son Sand Pit; 2001-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nick  Ciaccio → Ciaccio & Son Sand Pit; 2001-02-01 to 2007-11-04; source msha-controller-operator-history
- **operator_operates_mine:** Nick Ciaccio & Son Sand Pit → Nick Ciaccio & Son Sand Pit; 2007-11-05 to 2013-12-28; source msha-controller-operator-history
- **controller_controls_mine:** Michael F  Ciaccio → Nick Ciaccio & Son Sand Pit; 2007-11-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael F  Ciaccio → Nick Ciaccio & Son Sand Pit; 2007-11-05 to 2013-12-28; source msha-controller-operator-history
- **operator_operates_mine:** Stringfellow Materials → Nick Ciaccio & Son Sand Pit; 2013-12-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joel R  Stringfellow → Nick Ciaccio & Son Sand Pit; 2013-12-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joel R  Stringfellow → Stringfellow Materials; 2013-12-29 to current/open; source msha-controller-operator-history