... dollar so expended will yield profitable returns in increased efliciency of the boilers and in decreased cost of labour and repairs. ... Mr. A. Selwyn-Browna#39;s short review of modern development on the metallurgy of lead and zinc is most timely. ... Near each end are two tires resting on supporting rollers to enable the tubes to be revolved with little friction. ... solution or wash water could be sprayed on to the belt to loosen and disintegrate the slime ; or a mixer may effect this purpose.
|Title||:||The Journal of the Chemical, Metallurgical and Mining Society of South Africa|
|Author||:||Chemical, Metallurgical, and Mining Society of South Africa|