A $50 million agricultural exposition center has been proposed in Fauquier County and may begin operation as early as July. County supervisors have already endorsed a $50 million Farmers Home Administration loan application by the Agricultrual Trade Council to buy a 4,200 acre site near Warrenton and build the center.

The center, to be called Ag Expo, would be a place where American agricultural products and technology could be displayed and demonstrated in order to foster increased international trade.

Exhibition sites would be rented to companies and representatives from foreign businesses, and governments would be invited to inspect the merchandise. They would be able to examine a wide range of products from fruits and vegetables to tractors and harvesters.

The Ag-Expo staff will assist in the exhibition of products and arranging foreign export sales. Interpreting and translating services will be available.

The property, known as North Wales, is the former estate of Walter P. Chrysler Jr. and includes a 27-room Georgian mansion. The Agricultural Trade Council plans to build a conference center, a hotel for foreign visitors, 35 exhibit pavillions, a private airstrip and a golf course. The facility would have its own sewage plant, security and fire and rescue services. Various sized tracts of land will be available for cultivation or demonstration of equipment.

The council estimated that Ag Expo will employ 50 people initially and eventually will employ as many as 700, helping to add as much as $2 million to the county's tax base.

Eisner & Associates, a Baltimore advertising agency, has been retained by Fradkin Brothers. Fradkin Brothers markets furniture through two Baltimore stores and one in Riverdale.

The Rouse Company, through one of its subsidiaries and with funds provided by the trust and investment division of Morgan Guaranty Trust Co. of New York, has purchased the 930,000 square-foot Staten Island Mall. The mall is situated in New York City in the borough of Richmond. Initial plans call for an extensive remodeling of the mall and a releasing program.