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).
We are a voice to you; you have been a support to us. Together we build journalism that is independent, credible and fearless. You can further help us by making a donation. This will mean a lot for our ability to bring you news, perspectives and analysis from the ground so that we can make change together.
.png)
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.