Workshop Technology
The binder commonly used in making oil sand, is

Any one of the listed here
Clay type binder
Inorganic type binder
Organic type binder

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Workshop Technology
Notching is the operation of

Cutting a sheet of metal through part of its length and then bending the cut portion
Removal of metal to the desired shape from the edge of a plate
Cutting a sheet of metal in a straight line along the length
Bending a sheet of metal along a curved axis

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