This one shows firebricks, it also shows a nice arch template assembly.
3.33mins in is a great shot of the arch and mortar work, 4.19min is a good shot of how little mortar has actually come into the oven. this brings forward the poin that the striaghter your bricks the better the seal.
you may also notice a slight brick indent on the arch.
4.47min you can see here they have just done a straight across "drop", they have also put the chimmeny before the drop, that doesn't make sense to me as they will loose loads of heat? unless they have a flu that they can block it off but i can't see one.
http://www.youtube.com/watch?v=zahPN-Hi3hY
