• A drill bit is mounted on the end of a drill pipe. As the bit grinds away a mixture of
water and additives called ‘mud’ is poured into the hole to cool the bit and to flush
the deposits cut to the surface. The mud also coats the walls of the well providing
greater resilience to the well wall. Once at the required depth past the freshwater
zone (aquifers) the drill pipe and bit are removed from the bore hole.