Bricks, one of the most common materials in building, are made from clay. In order to mine large quantities of clay large dredgers are necessary. The bucket-chain...

Bricks, one of the most common materials in building, are made from clay. In order to mine large quantities of clay large dredgers are necessary. The bucket-chain...

Bricks, one of the most common materials in building, are made from clay. In order to mine large quantities of clay large dredgers are necessary. The bucket-chain...

Bricks, one of the most common materials in building, are made from clay. In order to mine large quantities of clay large dredgers are necessary. The bucket-chain...