Coopers worked with wood and iron making barrels.
Martin Cooper was the lead engineer in developing hand held mobile telephones, which started the evolution of cell phones.
En 18 is best material....
imprinted in stone
Try Blu-tac.
Martin Cooper is from Chicago, Illinois.
iron
Pozzolana is a type of volcanic dust that revolutionized the work of architects by providing a new kind of building material (concrete).
Glyptic
It could be any cooper or material that is squishier.
One who makes barrels, hogsheads, casks, etc., To do the work of a cooper upon; as, to cooper a cask or barrel., Work done by a cooper in making or repairing barrels, casks, etc.; the business of a cooper.
At&t
The 2012 MINI Cooper has double overhead cam (DOHC).
The 2007 MINI Cooper has double overhead cam (DOHC).
The 2014 MINI Cooper has double overhead cam (DOHC).
The 2002 MINI Cooper has single overhead cam (SOHC).
The 2010 MINI Cooper has double overhead cam (DOHC).
The 2009 MINI Cooper has double overhead cam (DOHC).