That idea did not last long, because it was pointed out just how fragile and friable concrete can become in certain circumstances.
There is essentially very little difference in the quality of opencast coal except that it is a little more friable and a little less volatile.
They were very friable and extremely liable to damage.
There was intense weathering of the friable cliffs by the gales and these houses might have fallen into the sea with loss of life.
Surgical resection of the subaortic ridge was carried out successfully at 14 years of age, when it was noted that the aorta was very thin and friable.
This facies is generally structureless and friable.
Both levels are either hard or friable.
The bedrock is shale but with outcrops of sandstone occurring near the top of the hill system where the soils are generally thinner, more friable and appear better drained.
