At the object level . Permissions allowed or denied at the object level apply to the entire object. For example, you can set an object-level permission on an OU object that allows a particular group, such as Account Operators, to create child objects in the OU. At the property level .
Ball mills are used in chemistry and in industry to grind hard solids to a very fine powder. They are very similar to rock tumblers. Basically, the idea is to rotate a container filled with heavy metal balls that crush the substance that you want to grind.
Guidance for the use of. Boiler Chemicals in Organic Processing. Boiler chemicals are commonly used in food processing facilities to protect steam generating pipes and equipment from corrosion. PCO must review all boiler chemicals used in the production of organic products. Proper maintenance of boiler is required and maintenance records must be available at inspection.