Building Materials
A good brick earth should contain:

About 20% to 30% of alumina
All listed here
About 50% to 60% of silica
Not more than 5% of lime

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Building Materials
A queen closer is a

Brick laid with its length parallel to the face or direction of wall
Brick with half the width at one end and full width at the other
Brick laid with its breadth parallel to the face or direction of wall
Brick having the same length and depth as the other bricks but half the breadth

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