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1.
S₁: Production of c6ins starts with the buying of unmixed metals and their testing by the Assay Department.
S₆: The blanks are heated to soften them, then rolled so that the rim is raised, and are stamped with the design of the coin.

P: These ingots are reheated until the temperature is hot enough f6r hot rolling.
Q: During this stage, the ingots pass through a series of rollers until they form long, thin sheets which are the thickness of a coin.
R: From these thin strips, blank discs are punched.
S: Then the metals are alloyed in oil fired or electric arc furnaces, and cast into ingots 40 cm wide, 15 cm thick and 6 m long.