hello sirs, i am just now reading a book called "The history of nearly everything" by Bill Bryson. it is a good book, if an opportunity occurs plz go thru this book. in that book i read abt SHRIMP, means SENSITIVE HIGH RESOLUTION ION MICRO PROBE. It is an instrument which can be used to date the ages of rock, i am mentioning this because i think we are using C14 carbon dating method to determine the age of the rocks which were unearthed by ASI and other Volunteers, this is i heard that more precise than carbon dating method. my qry to mr.SPS is are the ASI is using these kind of modern gadgets. this mail is just an informative if Dr.Sridhar Rathinam sir wants to delete this it will be just fine for me. with best regards s.anandanatarajan