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Aggregate Map – Choosing the right diamond blade

This map shows the basic aggregates found throughout the United States. Make sure the blade you want is specifically designed to cut the aggregate. Choosing the wrong blade will result in poor performance and uneconomical use.


Aggregate Map - USA

Soft – soft limestone, sandstone, dolomite limestone, soft shell

Medium Soft – pit gravel, limestone, dolomite

Medium – medium hard river gravel, medium traprock, decomposed granite, medium crushed gravel

Medium Hard – granite, slate, traprock, basalt, quartzite

Hard – hard chert, quartz, flint rock, hard river rock