In any LI District, land, buildings or premises shall be used for one or more of the following uses:
(a) Offices. Offices including professional, financial, governmental, public utility, administrative and sales except that no retail sales involving the physical exchange of merchandise shall be permitted.
(b) Public Buildings. Public buildings include police and fire stations, post office and hospital.
(c) Training Schools. Training schools are of a private, technical or professional nature.
(e) Newspaper Printing Establishments.
(f) Research Laboratories. Research laboratories including experimental, research and testing, all types of basic and applied research of product design and development, including, but not limited to, the operation of small scale experimental and pilot plant operations.
(g) Metal Production. Metal production includes metal-cutting, casting, stamping; gas and ultrasonic welding; grinding, machining and finishing, only in the production and/or assembly of products such as:
(1) Automobile and aircraft parts.
(2) Electrical and electronic equipment and motors.
(3) Electrical appliances; lamps, fixtures and clocks.
(4) Hardware, cutlery, kitchen utensils.
(5) Instruments; musical and scientific.
(6) Instruments and equipment; medical, orthopedic and photographic.
(7) Sporting goods, athletic equipment, toys.
(h) Nonmetal Production. Nonmetal production includes:
(1) Clothing and other textile products.
(2) Pharmaceutical products; compounding of cosmetics, drugs and toiletries.
(3) Food and drink preparation limited to bakeries, refrigeration, ice manufacture, bottling of soft drinks, creameries, wineries.
(4) Shops and offices of contractors, including carpentry, electrical, masonry, plumbing, heating, ventilating, air conditioning, painting, roofing and sheet metal, packaging and crating.
(5) Warehouses, other storage establishments, wholesale produce sales, parcel delivery stations.
(6) Storage and sale of new lumber and other building materials; public utility materials and equipment; monument works.
(i) Similar Uses. Any office, service, or industrial use not listed above but similar to a permitted use as to hours of operation and amount of traffic generated, may be permitted if such use complies with the environmental performance standards of Chapter 1135, is not specifically permitted in any other district, and conforms more closely to the basic characteristics of the classification to which it is added than to any other classification. Such determination shall be made by the Board of Zoning Appeals.