He warned that unauthorised well digging
has become an issue and it can cause ground water to dry up and also increase its salinity.
We have always raised the matter of random well digging
," he said, "but no one would listen and the result is the present situation in Aden.
He added that in order to reduce the costs of digging wells and to avoid the empty promises of the well digging
companies, the farmers dig wells on their own, but they cannot dig to the depth of 1,000 feet.
in consolidated rock such as granite, basalt, or limestone presented a more laborious challenge in removing material and probably was attempted only after the development of metal tools.