Wisconsin asbestos removal instructions are being offered by the Wisconsin Department of Health Services  for free from 1-5pm Tuesday at Northcentral Technical College in Wausau.  The sessions are meant to help contractors and property managers and owners address changes to the Wisconsin administrative code that relate to asbestos abatement.  In older properties, asbestos maybe found in flooring, caulks, mastics,  fireproofing materials, ceiling tiles and sidings as well as other building materials.  During the asbestos abatement process, these materials are dealt with carefully so as not to release asbestos dust into the air.