Hard nut to crack

 
Last Updated: Saturday 04 July 2015

A fibre-reinforced plastic bolt has been developed in Australia that is stronger than steel. The bolt has been designed for use such as a stabiliser for roofs and walls in underground tunnels. It can also be used in the aerospace industry. It is very expensive to install plastic products in the mining industry -- a major customer for bolts -- since it sheers off cleanly when struck by coal-cutting equipment. The plastic bolt, however, quickly pays for itself through reduced machinery damage and lower coal pollution ( Science Education Newsletter , June 1997).

Subscribe to Weekly Newsletter :

Comments are moderated and will be published only after the site moderator’s approval. Please use a genuine email ID and provide your name. Selected comments may also be used in the ‘Letters’ section of the Down To Earth print edition.