===成本===
From US$ 6 for a plastic bucket and 5 m of rope在利比里亚，从6美金一个塑料水桶和5米长的绳子，到150美金含一只绞盘、软管和封闭式的上层装置不等（Milkov, to US$ 150 with a windlass, hose and closed superstructure, in Liberia (Milkov, 1987).1987）。
===实地经验===
Area of use: All over the world.使用地区：全世界。
===指南、视频与链接===