Building Materials
If the furnace is provided with insufficient fuel at low temperatures, the type of pig iron produced, is called

Grey or foundry pig
Bessemer pig
Mottled pig
White or forge pig

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Building Materials
The plywood

Has greater impact resistance to blows than ordinary wood
Cannot be bent more easily than ordinary wood of same thickness
Has good strength along the panel only
Can be spilt in the plane of the panel

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