1.   Concrete blocks were piled high to fortify the government center.

2.   Construction method would be single walled using concrete blocks and bricks.

3.   In front of him was a mound of concrete blocks, dust, jagged glass and twisted metal.

4.   Meanwhile, powerful United States Army helicopters continued dropping massive concrete blocks to hinder the lava flow.

5.   Most likely to suffer are concrete block houses built in the Twenties and Thirties and earlier buildings where shuttered concrete was employed.

6.   Since then, her head has felt like a concrete block.

7.   The accident was due to a concrete block thrown from a bridge.

8.   The area is full of monstrous concrete high-rise blocks.

9.   The walls are made of hollow concrete blocks.