Welcome to Harleysville Materials!

Welcome to Harleysville Materials!

THE MOUNT GROUP operates one of the oldest argillite quarries in the Mid-Atlantic region.

First developed on an industrial scale in 1924, THE MOUNT GROUP purchased the Harleysville quarry in 2010.
Since then, we have built it into a state-of-the-art facility capable of producing a complete line of high-quality aggregates and red stone for commercial and decorative use.

THE MOUNT GROUP is committed to preserving our environment and conserving natural resources. By recycling construction materials, we reduce the disposal of usable products into landfills, where space is limited. Our recycling facilities operate under Pennsylvania Department of Environmental Protection (PA DEP) guidelines. 

We strive to be good neighbors in the communities that we serve.

Reclamation Fill

HARLEYSVILLE MATERIALS accepts soil, dirt, brick, block, concrete and other materials recognized by the PADEP as reclamation fill.

Reclamation fill tipping is heavily regulated by the PA DEP.

For complete reclamation fill requirements, please visit www.depweb.state.pa.us.

THE MOUNT GROUP is committed to being a leader in environmental compliance, and we ensure that your materials meet PA DEP guidelines.

Contact our team of experts to submit your project for approval!

Learn More About Our Quarry

What We Offer

Red #10 Screening
Red #57
PennDOT #57
#10 Screening
PennDOT #8

Also available: Rock Lining Stone R-3 to R-7, Shot Rock, #1 Ballast, #3 Ballast

Don't see the stone you need? Call us to discuss a custom order!

Harleysville Quarry Quote Request

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Randy Geis
Sales Representative
(609) 922-8399

Hot-Mix Asphalt Plant

The asphalt plant located on-site is open and operated by Allen Myers. Please contact Allen Myers at 610-960-3152 for more information.


A digital electronic scale house is on site with a second scale already in the pipeline to ensure quick efficient service for our customers.


Hours of Operation

Monday – Friday 5:30 AM – 4:00 PM
Saturday  7:00 AM – 12:00 PM (by request only)

Scale House

460 Indian Creek Road
Harleysville, PA 19438

Mailing Address
PO Box 587
Berlin, NJ 08009
Corporate Office: 856-768-8493
FAX: 856-753-1453