http://www.bigsiteofamazingfacts.com/how-do-engineers-and-construction-crews-make-tall-buildings-perfectly-straight-and-vertical/
1 page of info ---------------------------- I thought they just hired some StoneCutters - silly me -- You received this message because you are subscribed to the Google Groups "massfire" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/massfire. For more options, visit https://groups.google.com/d/optout.
