If the material is moving too fast then the liquid material can erode the mold and contaminate the final casting.

In addition, the materials that deposit on the wall of the chamber can contaminate later depositions.

Without a cleanup, the material would cling to surfaces and contaminate the area for decades.

Particle-size analysis in the agriculture industry is paramount because unwanted materials will contaminate products if they are not detected.

But they emphasized that it was not at all certain that the material in the packages contaminated the plane.

Furthermore, the materials that make up the container may chemically contaminate the liquids under study.

Dr. Lindstrom said experts were taking their time examining the sample capsule to determine how badly dirt and other materials had contaminated it.

The goal of silo efficiency is to ensure that oldest material is used first and does not contaminate newer, fresher material.

This material can contaminate recycled paper.

The local community objected to that approach, worrying that the radioactive material might eventually contaminate groundwater drinking supplies.