(2) The following uses shall be considered special exceptions and will require the written approval of the Board of Zoning Adjustment: Bag cleaning, boiler and tank works; central mixing plant for cement, mortar, plaster or paving materials; coke oven; curing, tanning and storage of raw hides and skins; distillation of bones, coal, wood or tar; fat rendering; forge plant; foundry or metal fabrication plant; gasoline or oil storage above the ground in excess of 500 gallons; slaughter houses or stockyards; smelting plant; and the manufacture of acetylene, acid, alcohol, or alcoholic beverages; ammonia, bleaching powder, chemicals, brick, pottery, terra-cotta or tile; candles; disinfectants; dyestuffs; fertilizers; illuminating or heating gas (or storage of same); linseed oil, paint, oil, turpentine, varnish, soap and tar products, or any other use in the opinion of the Board of Zoning Adjustment would emit detrimental or obnoxious noise, vibrations, smoke, odors, dust or other objectionable conditions beyond the confines of its property. The Board shall grant such approval if it determines that the proposed use will not extend its detrimental or obnoxious effects beyond the limits of the Heavy industrial District in which it is located.