Does anybody know of any studies that allow you to identify different types of drill or blasting holes? Hand, early steam drill, carbide? Keith Doms Newlin Grist Mill ######################################################################## Access the HISTARCH Home Page and Archives: https://community.lsoft.com/scripts/wa-LSOFTDONATIONS.exe?A0=HISTARCH Unsubscribe from the HISTARCH List: https://community.lsoft.com/scripts/wa-LSOFTDONATIONS.exe?SUBED1=HISTARCH&A=1 This email list is powered by LISTSERV: https://www.lsoft.com/LISTSERV-powered.html ########################################################################