Federal regulators have capped the volume of futures trading for 28 commodities, with an eye to clamping down speculative trading. The action Tuesday by the Commodity Futures Trading Commission affects futures contracts for agricultural commodities, energy and metals that are traded on several U.S. exchanges. They are:
_Agriculture: Corn, oats, soybeans, soybean meal, soybean oil, wheat, cotton, hard winter wheat, hard red spring wheat, milk, feeder cattle, lean hogs, live cattle, rice, cocoa, coffee, frozen orange juice concentrate, sugar no. 11, sugar no. 16.
_Energy: Natural gas, light sweet crude oil, gasoline, heating oil.
_Metals: Copper, gold, silver, palladium, platinum.