The following uses shall be permitted upon approval by the board of commissioners as provided in Section 406 of this ordinance:

1.

Retail business on the following conditions:

a.

The business is incidental to a permitted use;

b.

The business is located on the same premises as a permitted use; and

c.

The business involves no open storage of any type.

2.

Restaurants where the use is intended to serve the food needs of the industrial area.

3.

Watchman's or caretaker's single-family dwelling on the following conditions:

a.

The dwelling is located on the premises of a permitted use;

b.

There is only one dwelling on a zoning lot; and

c.

A member of the family residing in the dwelling must be employed by the industry as a watchman or caretaker.

4.

Publicly owned building, facility or land.