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packing, and audit processes with respect to leathers that were
substantially similar to those processes with respect to metals.
Beginning in 1986 and during 1987, B&L Ireland and B&L Hong
Kong applied leather to metal fronts (including headbars) and
temples prior to completing the lensing, templing, and truing
functions. Those companies used a training manual prepared by
Tannereye Ltd., an unrelated company, to train their employees to
perform those functions.
In the leather application process during 1986 and 1987, the
operator mixed the ingredients for the primer, applied the primer
to the fronts27 using a syringe, and placed the primed fronts and
temples in a drying area for a minimum of eight hours (or, in the
case of black chrome fronts, placed them in an oven for two
hours, reprimed the fronts, and allowed them to dry for 24
hours). The operator used acetone to remove primer from the
endpieces or bridge, since those areas had to be free of any
adhesive that would detract from their appearance.
Prior to applying leather to the primed fronts, the operator
inspected the leather, which had an inactive glue on the inside
surface, to ensure that it was free from flaws. The operator
measured the leather (including marking where the nosepad arm was
located) and cut off any excess leather so that the leather piece
would fit the front. The operator applied acetone to the side of
27 Primer was also applied to metal temples.
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