This data sheet discusses health hazards associated with methods and materials used in the preservation of historic structures and buildings. Topics include: A) Planning site surveys and analysis, (structural, material); B) Research and investigation,(product information, labels, material safety data sheets,(MSD'S), government regulations; C) Safety equipment needs assessment, (personal protection equipment, ventilation, fire protection, safety devices and tools, personal hygiene, emergency medical equipment); D) Hazardous operations and site evaluation,(air quality, fatique, fire hazards) warnings, work schedules, emergency procedures, waste disposal; E) Medical programme, (monitoring, reporting); II Materials and Processes: A) Asbestos; B) Surface coatings,(lead paint, other toxic pigments, natural resin coatings and varnishes, rust and corrosion inhibitors); C) Chemical cleaning,(organic solvents, acids, alkalis); D) Coating removal,(heat, burning or torching, sanding, abrasive blasting, scraping, solvent stripping, acids and alkalis); E) Consolidants and binders,(epoxy resin systems, alkoxysilanes and silicones, acrlyics and methacrylates, foams); F) Chemical pest control measures. References. This is a reference for Occupational Health and Safety for conservators, architects, construction and engineering personnel, and owners of historic structures. -- CCI