Industrial Products


Piqua Materials Inc. is located in the heartland of the plastics and elastomeric industries, providing a cost savings on freight and shorter time in transit. Most Piqua Minerals Fillers are available in dated, color-coded bags, palletized and stretch wrapped. Day-to-day quality control on filler production is maintained at the plant which borders on the quarry site. All Piqua Minerals Fillers are produced from a high calcium limestone ( see Chemical Analysis ) which is quarried from the Brassfield geological formation; one of the whitest and most consistent formations in Ohio.

  • Piqua Minerals Filler 30 - 3 micron median, 100% thru #325
    Finely ground material with low oil absorption and high packing properties for sheet molding compounds, bulk molding compounds, thick molding compounds and fiber reinforced plastics - all widely used in the automotive, marine and recreational products industries. Other applications for this excellent filler are vinyl compounds, polypropylene, polythylene, adhesives, masics, caulks, elastomers and reaction injection molding. (Available in bags only)



  • Piqua Minerals Filler 60 - 6 micron median, 99.5% thru #325
    Piqua Minerals Filler 70 - 7 micron median, 97.0% thru #325
    General purpose fillers intended primarily for elastomeric compounding. Likely applications in elastomers include footware, houseware, lawn and garden equipment, recreational equipment, aircraft and automotive parts. The material also may be used in some FRP, SMC and BMC compounds at less cost than more finely ground fillers. (Available bagged or bulk)



  • Piqua Minerals Filler 300 - 18 micron median, 60% thru #325
    Piqua Minerals Filler 200 - 44 micron median, 50% thru #325
    Coarse, low-cost, general purpose fillers for caulks, sealants, ceramics, asphalt compounds, epoxy casting compounds, floor tile and certain elastomers. These fillers have highly consistent properties so compounding can be standardized. (PMF 300 - bagged or bulk, PMF 200 - bagged only)



  • Piqua Minerals Filler 600 - 53 micron median, 45% thru #325
    A roofing grade filler suitable for asphaltic and roofing filler applications. May also be used for concrete leveling injection material (Slab Jacking). (Available bagged or bulk)

  • Piqua Minerals Filler 1800 - 90 micron median, 30% thru #325
    Suitable where a coarser filler with less fines is required. (Available in bulk only)
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Stone Products

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Piqua Materials Inc. produces a wide variety of stone products from all three geological formations which it mines. The following are some of the products available. Please contact us for your specific needs.

  • Cupola Flux - stone used by the casters of steel and other metals.

  • Riprap - larger stone used to shore up lake and river banks, highway shoulders and embankments, etc. Can also be used in landscaping.

  • Crushed Stone - a wide range of medium-size stone for base under highways, parking lots, building sites and similar applications.

  • Railroad Ballast - a specially sized stone for use in the construction and maintenance of railroads.

  • Landscape Chips - small white stone chips used in commercial, industrial and private landscaping. These chips are now available in bulk or in 1/2 cubic foot bags.

  • Natural Gravel #4's - ideal stone for roofing purposes. Can also be used as leech bed stone in most areas.
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Agricultural Products


All of Piqua Materials' agricultural products are produced from high-calcium limestone (see Chemical Analysis) quarried from the Brassfield geological formation. It is then crushed, kiln dried and pulverized into feed grade and agricultural sizes.

  • Agricultural Limestone - pulverized limestone can be used for soil neutralization and nutrition. Limestone supplies essential plant nutrients calcium (Ca) and magnesium (Mg). It also increases microorganism activity which helps release nitrogen, phosphorus, boron, sulphur, and other elements from the soil organic matter while helping to get rid of toxic iron and aluminum. This makes fertilizer phosphorus more available; therefore making limestone a good investment to help fertilizer work. Limestone costs a fraction of a cent per pound compared with phosphate (P2O5).

  • Lawn and Garden Limestone - Agricultural limestone bagged for distibution through lawn and garden stores.

  • Feeding Limestone - finely ground limestone used as a supplement in livestock feed.
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Athletic Field Marker





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