Here's what the District of Muskoka had to say.
We have been using Tall Oil Pitch emulsion as a stockpile sealant for our winter salt for the past 7 years. The product not only prevents wind loss, it also provides a water proof sealant to keep salt dry and prevent leaching of calcium into the water. In 2006 we tried Tall Oil Pitch emulsion on 30,000 m2 of new shoulder work and were pleased with the results. Reduced washouts (therefore reduced grading and maintenance), stabilization of the shoulders and roundings and visually pleasing in appearance as it keeps the granular natural looking. We continued in 2007 and beyond to specify the emulsion on all new shouldering work. We might add that it is very cost effective when compared to other emulsions in use for granular sealing.

Sincerely,
Randy Bissonette
Road Maintenancer