The Sugar-Tube Method of Determining Rock Dust in Air (Classic Reprint)

Download or read book The Sugar-Tube Method of Determining Rock Dust in Air (Classic Reprint) written by A. C. Fieldner and published by . This book was released on 2016-06-27 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Sugar-Tube Method of Determining Rock Dust in Air In connection with investigations relating to the improvement of health conditions in the mineral industries, the Bureau of Mines has made considerable use of the sugar-tube method for deter mining the nature and amount of siliceous dust in suspension in air. By this method, a measured volume of the dusty air is passed through a tube containing granulated sugar, which filters out the suspended dust. The sugar tube is sent to the laboratory, the sugar dissolved in water, and the insoluble dust filtered off, ignited, and weighed. A portion of the sugar solution containing the dust suspension is made up to a measured volume, and an aliquot part (1 cubic milli meter) is placed under the microscope in order that the number of dust particles may be counted, their size and shape measured, and other characteristics noted. A full description of the method and apparatus previously used are given in Technical Paper 1051 and Bulletin 1322 of the Bureau of Mines. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.