B) "As building materials".
Apart from calcium, bones use phosphorus, magnesium and other minerals as building materials.
In February and March, it propelled sales in areas such as building materials and gardening supplies.
The rest were removed during and after the war, used as building materials and to reinforce the Vistula's banks.
These books are known as "readers" so we won't get them confused with those other kinds of books that we eat or use as building materials.
Villagers who live near the wall routinely steal bricks from it to use as building materials or to sell, according to China's Great Wall Society.
Brick and concrete are surpassing wood as building materials, although many Finnish families have vacation cottages, typically modest lakeside dwellings of traditional log or timber construction.
But older waste-storage facilities still harbor dangerous material and, as building materials age, are ever more fragile and accident-prone.
The development of steel and concrete as building materials had the effect of placing design more in the hands of the civil engineer than the architect.
Rahimifard's team have designed machines that break shoes into small pieces and separate different materials so they can be reused as building materials, but he accepts this is not a perfect solution.
And what really interests us here is how humans, as much as building materials, provide that metaphorical awning: how, in the words of that famous Irish proverb, "people live in the shelter of each other".
