The phrase indicates a search for significant quantities of sodium chloride, typically in its unrefined, granular form, available for purchase from suppliers located in close proximity to the searcher. An example would be a municipality seeking a large supply to de-ice roads during winter.
Procuring substantial amounts of this de-icing agent offers several advantages, including cost-effectiveness due to bulk pricing, readily available supply during periods of high demand, and reduced logistical complexities associated with frequent smaller purchases. Historically, the use of this mineral for de-icing purposes has significantly improved safety and mobility during winter weather conditions, although environmental considerations are increasingly relevant.