Where Are the Golden Plates Today?
If the Golden Plates were available for examination today, they could prove or disprove the claims Joseph Smith made about them and give scholars an insight into the language of Reformed Egyptian. Unfortunately, when the translation was finished, the plates were taken back to heaven by Moroni. This is what Smith claimed.

About Witnesses?
This, the official version of events, causes many critics to question whether or not the Golden Plates ever existed. Complicating the issue is the concept that many of the witnesses saw them with their "spiritual eyes" rather than physical eyes, which ties into a common metaphysical belief of the 19Th century.
Read more: http://mormonism.suite101.com/article.cfm/the_golden_plates#ixzz0W0mQqRTb
Read more: http://mormonism.suite101.com/article.cfm/the_golden_plates#ixzz0W0mBbpLQ
The actual translation "process' was with a stone in a hat. Joseph would hold the hat up to his face and letters would appear and his scribe would write them down.
The gold tablets were said to be in the woods or hidden under a blanket in the other room. (from LDS statements and diaries)
Quote from David Whitmer,
?Joseph Smith would put the seer stone into a hat, and put his face in the hat, drawing it closely around his face to exclude the light; and in the darkness the spiritual light would shine. A piece of something resembling parchment would appear, and on that appeared the writing. One character at a time would appear, and under it was the interpretation in English. Brother Joseph would read off the English to Oliver Cowdery, who was his principal scribe, and when it was written down and repeated to Brother Joseph to see if it was correct, then it would disappear, and another character with the interpretation would appear. Thus the Book of Mormon was translated by the gift and power of God, and not by any power of man.? (David Whitmer, An Address to All Believers in Christ, Richmond, Mo.: n.p., 1887, p. 12.)"
*Mormon leaders have confirmed this method...HTTP://library.lds.org/nxt/gateway.dll/Magazines/Ensign/1993.htm/ensign%20july%201993.htm/a%20treasured%20testament.htm
Now this rock method is not taught to Mormon youth or potential converts at ALL! Pictures are shown with scribe and smith sitting at a table just a working away.