mibc or a frother oil mixture furthermore a gas such as air nitrogen or carbon dioxide or mixtures thereof can also be added to the slurry normally a frother such as mibs or n hexanol or an oil are added in a small amount which is less than 2 and preferably less than 1 of the total fluid volume in another embodiment proppants can be pre treated on the fly in a fracturing operation wherein the proppants are pre treated prior to being added to the blender while at the same time fluid is pumped into a well there are a few methods of pre treating on the fly in one method prior to being added into the blender proppants are first treated by contacting the proppants for example by spraying with a liquid medium containing one or more hydrophobizing agents as described herein such as tallow amine a cationic modified polysiloxane an amine silane or an alkoxy silane one or more hydrophobic polymers such as a polyolefin including poly isobutene and poly isoprene and either an oil or a frother or a frother oil mixture the pre treated proppants are subsequently mixed with an aqueous liquid while being pumped into a well.