Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

Sands of time


It seems that at last people are coming to grips with the need for renewable energy. Another problem, equally important, that does not seem to get the attention it deserves, is the exploitation of fertile resources such as iron copper, aluminium, lead, tin, sand, stone, gravel, clay oil gas and coal.

These resources should be conserved as much as possible for future generations and not squandered.

How long will these resources last at present day usage? I wonder if anyone at the Institution could give some idea?

R Baker (M), 1 Gordon Street, Cwmaman, Aberdare CF44 6ND

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Please note comments made online may also be published in the print edition of New Civil Engineer. Links may be included in your comments but HTML is not permitted.