metal
Re-enforced concrete
there were 50-1000 public shelters (street shelters) during WWII
The Anderson Shelter was designed by William Paterson and Oscar Carl Kerrison in 1938. It was named after Sir John Anderson, who was responsible for air raid precautions during World War II, and it was Anderson who initiated the development of the shelter.
I wonder if you're thinking of the'Anderson' shelters.
Morrison shelters were made of iron.
Anderson shelters were made of corrugated iron and Morrison shelters were made from steel panels.
Morrison shelters were made from sheets of steel.
5,000 flood shelters were made in Bangladesh
bomb shelters were made out of corigated iron with mud and grass covering it.
They were made out of iron mettle
yes ..
pachacuti
They were made mainly of stone.
The materials are birch trees, grass sheets (kind of like grassy blankets) and... that's it.
Anderson shelters wee made of corrugated iron.
Anderson shelters were made from corrugated iron.