The recommendations of this document are only a summary of the most important precautions. All users must strictly follow the safety instructions existing in the laws, decrees and technical standards of their country and in machine instructions. General Safety Recommendations Transport and storage All coated abrasives should be handled carefully. Mechanical damage can be caused by mishandling, which should be avoided. Coated abrasives should be stored in dry, frost free conditions. They should be kept away from heat sources, cold, damp walls, doors or windows and should not be in direct contact with the floor. Temperatures and humidity should be between 18-22 °C and 45%-65% Relative Humidity. Coated abrasives should not be exposed to direct sunlight. Products should be kept in their original packaging until immediately before use. Once unpacked, they should be stored in a way which avoids distortion. Personal protection Safety goggles, ear muffs, safety gloves, dust masks and, if grinding conditions are severe, additional face protection, leather aprons and safety shoes must be worn. General precautions Safety instructions provided by the machine manufactures must be followed. Where fitted all guards, covers and hoods must be in place on the machine during grinding, and should not be modified in any way. Coated abrasives should not be used near inflammable material or in an environment where there is a risk of explosion. Sparks should be directed away from the face and body and if possible towards the floor. Dust extraction equipment must be used whenever it is available. The instructions for use given by the abrasive manufacturer must be followed: ex. "Not to be used without a support" or "Not to be used for wet grinding". The work piece must be firmly fixed before grinding starts. Check all abrasives visually before use and make certain that the product is suitable for the application. No modifications should be made to abrasive products after delivery. When using a portable grinder always switch it off and allow the spindle to stop completely before putting the tool down. Wet grinding should only be carried out on machines designed for this purpose and with abrasives designated as suitable for this type of operation. Source:http://www.stonecontact.com