Title:
Gravel Beneficiation in Michigan
Author(s):
Frank E. Legg. Jr. and William W. McLaughlin
Publication:
Journal Proceedings
Volume:
57
Issue:
1
Appears on pages(s):
813-826
Keywords:
none
DOI:
10.14359/8048
Date:
1/1/1961
Abstract:
Michigan natural gravel is now competing with imported high quality coarse aggregates intended for concrete subject to severe winter exposure, as a result of installation of various types of beneficiation plants. Thus, local deposits are being utilized, after upgrading, without sacraficing concrete quality . This development was prompted in large measure by the decision of the Michigan State Highway Department that aggregate quality standards Gould not be relaxed despite the greatly increased emend of the accelerated highway construction program. Many of Michigan’s lower pehinsula glacial gravels have been found particularly amenable to upgrading by heavy media separation, although commercial installations of elastic fractionation, jigs, and soft tors are being tried.