How many?

Short Tons

The short ton is a mass measurement unit equal to 2,000 pounds (907.18474 kg). It is commonly used in the United States, where it is known simply as a ton.

Pounds

The pound or pound-mass is a unit of mass used in British imperial and United States customary systems of measurement. Various definitions have been used; the most common today is the international avoirdupois pound, which is legally defined as exactly 0.45359237 kilograms, and which is divided into 16 avoirdupois ounces.