Differences between the unified soil classification system & the british soil classification system.?

Does anyone knows the answer to the question above? beside that they are used in different countries. what is the difference in their feature.

Public Comments

1. You can proably find your answers here http://www.areforum.org/guest/General%20Structures/USCS.pdf http://environment.uwe.ac.uk/geocal/SoilMech/classification/soilclas.htm http://soil.gsfc.nasa.gov/links/tax.htm