powders of specific particle size, high productivity and versatile applications. By definition, âSpray drying is the transformation of feed from a fluid state into a dried. particulate form by spraying the feed into a hot drying medium.â (Masters, 1991) A spray dryer operates on convection mode.
Sometimes the grounds and maintenance department of a town or county creates mulch from trees that have been cut down and they make it available to the public. To lay a 4-inch-deep spread of bark mulch in a 300-square-foot area, a landscape or garden service will charge $425, which includes the material and labor. You can buy the mulch for $85 and do it yourself, and pocket a 80 percent saving.
Most are clean, trim bushes, edge beds, pull weeds, install mulch. If I calculate it on a per yard basis most of my jobs would be $150-$200+ per yard. But I am an hours + material + profit = job cost type of person. If you're just actually only installing the mulch with ZERO prep I can see a per yard price working but still gets fuzzy.