Quality construction materials are at the core of Pennsy Supply!
  • High-Calcium Limestone
    High-Calcium Limestone

Pennsy Supply, Inc., a CRH Company, is the premier supplier of High Calcium White Aggregate in South Central Pennsylvania.

Strategically located are three High Calcium sources and two grinding mills dedicated to grinding High Calcium Aggregate from #10 mesh to 12 micron median sizing.

Our Thomasville site near York is uniquely processing high-calcium with a bright white color and a composition for specialized use. This facility also bags all of its products in Super-Sacks or #50 lb bags.

The Millard Plant grinds +94% Calcium Carbonate material and caters to the Shingle and Animal Feed industry.

Three mining locations in Central Pennsylvania support our grinding mills and also have High Calcium in aggregate form, from Crusher Run to smaller fractions for the Cement, Water Conditioning, and Coal Power sectors.

Some common uses for our High Calcium and White Products are:

  • Asphalt Roofing
  • Animal Feed
  • Coal Power Utilities to clean the air
  • Cement Production
  • Water Treatment
  • Soil Conditioning and Ph stabilization
  • Turf Guide for sectoring Sports Fields
  • White Mine Dust
  • White Aggregate for Concrete Block and Pre-Cast
  • Industrial Fillers used in:
    • Carpet backing
    • Grout, Adhesive and Floor Leveling Compounds
    • Paint, Caulking and Stucco Products
    • Cat Litter
    • Asphalt Coatings and Crack Sealers


“On behalf of the Township, I would like to thank Pennsy Supply for allowing the Township to deposit snow on Pennsy Supply property from the recent winter storm 'Jonas'. We also appreciated the upkeep of moving snow so the township could continue its deposit. Your help was a tremendous relief in the snow removal process.”

Earl Blauch
North Londonderry Township