a & = The manufacturing of the following electrical equipment: i. heavy electrical machinery and equipment. The manufacturing, processing or finishing of the folloving non-metallic mineral. products, or others of like character or kind: abrasive products.. asbestos products. cement, Plaster, lime, gypsum and associated products. clay and clay products. , , concrete products and ready-mix concrete. stone products. _ @xcluding manufacturing and processing from raw uaterials. The manufacturing, processing and storage of the . £ollowing petroleum and coal products: i. coal and tar products. 41. roofing mate-lals. excluding manufacturing and processing from raw materials. The manufacturing, processing and storage of the , following chemical and allied products: ‘4. compressed gases. ‘44. disinfectants and insecticides. 444. gum and wood chemicals. _iv. primary plastics. v. rubber. , Manufacturing and processing from raw materials not hereinbefore . permitted may be permitted by Land Use Contract subject to the provisions of Section 702A of the "Municipal Act" and Section. 202A of this By-law. (2) Conditions of Use: (a) Lot Area and Width Zach lot shall have an area of not less than 4 acres and a width of not less than 10% of the perdmeter, except where such lot was existing at the effective date of this By-law. Lot Coverage and Building Size Buildings and structures together shall not exceed a lot coverage of 60% and the minimum groma floer srea of a principal building shall be 1500 square feet. Front Yard A front yard shall be provided of not less than 20 feet ‘in depth,