However, these same pores will later permit air or water to reach the substrate and initiate corrosion if not sealed.
A one-way clapper valve permitted fresh water to leave at low tide.
The holes permitted water to flood up and freeze a new layer over the perilously thin crust on which the men worked.
The collected electricity will permit a refrigerator, hot water and lights.
According to some reports from the city, the Chechens have so far refused to permit food or water for the patients in the hospital.
Some are built with solid fabric while others are open in design to permit water to flow through them more readily.
Most damaging are cracks that permit water to enter.
The pressures measured by Pathfinder would not permit water or ice to exist on the surface.
Apparently the laguna sits upon fissures permitting water to percolate down.
The barometric relief valve permits air to pass through, but not water or other liquids.
