(A) General purpose.
(1) To provide suitable space and locations for light and heavy manufacturing, processing, major repair, salvage and maintenance, bulk storage, warehousing, wholesaling, distribution operations, energy generation and waste disposal.
(2) To provide space for manufacturing activities in locations accessible to rail and highways, so that the movement of raw materials, finished products and employees can be carried on efficiently and with a minimum of danger to life and property.
(3) To realize proper standards of performance which will restrict obnoxious activities and encourage activities that will not affect lives of people living and working nearby.
(4) To promote stability of manufacturing uses.
(5) To provide room for industrial expansion in suitable locations so that employment opportunities will be preserved.
(B) The following are Industrial Districts:
(1) Light Manufacturing District (M-1).
(a) Purpose. This district provides a location for non-nuisance type manufacturing uses which may be located reasonably close to residential areas.
(b) Enclosure. All activities shall be conducted wholly within a completely enclosed building, except for
1. Parking and loading
2. The display of products after receiving a conditional use permit.
(c) Night operation. No night operation (including loading) shall be conducted within 200 feet of a residence district.
(d) Height. No structure within 200 feet of any residence district shall exceed 40 feet in height.
(2) General Manufacturing District (M-2).
(a) Purpose. This district provides space for manufacturing and industrial operations which are potentially incompatible with most other uses, which are distant from residential areas and are located on major truck routes and rail lines.
(b) Enclosure. All open storage shall be screened from view from a residential area or street.
('69 Code, § 7-16.02, Subd. 3)