Volumetric shrinkage in soils is an important physical parameter used in soil erosion and soil mechanics studies. The American Society for Testing Materials D427 method for determining volumetric shrinkage was modified using a less toxic silicone‐mineral spirits mixture instead of liquid Hg. The silicone‐mineral spirits method yielded the same results in shrinkage as measured by the Hg method for a wide range of soils containing between 22 and 48% clay. Use of the silicone‐mineral spirits mixture decreases safety hazards associated with liquid Hg and is more economical.