While agreeing with correspondent Bill Capamagian that New Zealand should become self-sufficient in oil production (‘Forget protest we need oil' The Weekend Sun, March 14), one wonders why the powers that be have never considered importing the technology of producing 'oil from coal” from SASOL (an international integrated energy and chemical company).

We have the coal here and the process is far more environmentally-friendly than drilling for oil in the sea or the fracking process.

B L Drew, Poike.