Today most crumb producers (about 3 dozen verifiable producers) make conventional crumb which is 10 mesh to 30 mesh particle size, usually produced with cracker mills or grinders. 10 mesh crumb is generally used with a polyurethane binder to make relatively static, low cost products such as mud flaps and floor mats. 30 mesh crumb can be used to make flexible products such as water hoses and shoe soles. More dynamic rubber goods normally cannot use 10 to 30 mesh; consequently, the industrial demand for and value of this size crumb is confined.

There are only about a dozen Fine (40 mesh) and a half-dozen SuperFine (80 mesh) producers, due to the substantial investment and expertise required. ART is focusing on finer crumb grades because they have more value. Theoretically, SuperFine Crumb can be added at 5% to 10% levels in many compounds. However, because conventional crumb and industrial scrap has been previously vulcanized it cannot be blended in heavier concentrations with fresh rubber compounds, or recycled by itself (see REVIVED).

Superfine Crumb is used by Rubber Manufacturers, Highway Construction, Roofing Industry, Industrial Goods.

The Florida Department of Transportation currently specifies crumb rubber to be added into liquid asphalt on all Interstate projects.

FDOT tests show:

	Crumb rubber decreases asphalt cracking
	Increases highway life 25% while providing quieter, safer (wet traction) roads

A*R*T's Fine and SuperFine Rubber is:

	Ambient Processed
	Consistent Quality
	Available for Immediate Shipment
	Available in Bulk, 50# Bags or Supersack

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