"If one of those strikes the floor or table on the nail head, it'll go off."
Still you should touch the nail heads, and test its weight.
Extract the nail heads or leave them in place, as you desire.
The nail head lay flush with the wood, and the little boy stopped to rest.
Through the dust, nail heads showed where the joists were.
Then cover the nail heads and edges of the patch with more cement.
A hammer with a smooth face, however, will often slip off the nail head if the carpenter works too fast.
They were gray eyes, hard as nail heads, but clear and surprisingly beautiful in that otherwise unfortunate face.
They're set flush with the bricks on the floor, no bigger than nail heads.
A better way to protect the nail head is with a "copper bib."