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| посыпание солью и песком (What is the science of salting and sanding roads? Answer: I believe what you are asking is why they salt and/or sand roads. The answer to this, is when it snows, rains, sleets or hails badly, the road becomes slick, so the salt/sand is meant to make it a bit rougher, so the cars don't skid. | We offer both residential and commercial snow plowing services in the winter months, sanding and salting as well as sidewalk clearing and snow removal ... Alexander Demidov) | |||