41.   I was told that the wall are concrete slabs.

42.   If the carpet is on a concrete slab, it might be trapping moisture which is coming up through the slab.

43.   If it is on a concrete slab and is not an indoor-outdoor type, it may be trapping moisture under it.

44.   In many cases, the coffins pushed up thick concrete slabs capping the vaults.

45.   Instead of traditional windows in his walls, he alternated tall panes of glass with tall concrete slabs to form his walls.

46.   Instead, we would cross on a concrete slab which lay in the river.

47.   Inside, the room is cavernous, with concrete slab walls smudged with brown and ocher paint.

48.   Instead, much of the fabled movie studio remains a patch of bare dirt and concrete slabs, with a partly melted locomotive resting nearby.

49.   It also includes X-rays and drilling -- completed last week -- into the concrete slabs and beams to check their strength and thickness.

50.   Is there any way to insulate such a concrete slab?