Keystone Quarry & Materials LLC

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Keystone Quarry & Materials LLC Stone Quarry Located in New Alexandria, Pa Westmoreland county. Serving Westmoreland, Allegheny, Indiana and surrounding areas with aggregate.

03/04/2026

Due to the holiday weekend, we will not be open tomorrow Saturday April 4th. We hope you enjoy your weekend and Happy Easter!🐣

The quarry will be closed Friday, February 20th, for MSHA training. We will reopen Saturday morning at 6:00AM.
20/02/2026

The quarry will be closed Friday, February 20th, for MSHA training. We will reopen Saturday morning at 6:00AM.

Do you have an upcoming project? We’d love to help with your aggregate needs! Do you have specific stone in mind? If not...
12/09/2025

Do you have an upcoming project? We’d love to help with your aggregate needs! Do you have specific stone in mind? If not, we can help find what will work best for you.

Due to yesterday’s storm, our phone lines are currently down. 📞 However, we should be able access our voicemails. If yo...
30/04/2025

Due to yesterday’s storm, our phone lines are currently down. 📞 However, we should be able access our voicemails. If you need stone, please leave a message and we will return your call. You can also send us a Facebook message. We are actively monitoring our inbox and will reply shortly.

NOW AVAILABLE: Quality 2A Modified AggregateLooking for a reliable and cost-effective base material? Our 2A Modified Agg...
28/03/2025

NOW AVAILABLE: Quality 2A Modified Aggregate

Looking for a reliable and cost-effective base material? Our 2A Modified Aggregate is the perfect solution! This crushed stone and stone dust blend compacts tightly, creating a stable and long-lasting foundation for driveways, roadways, parking lots, patios and more. Its excellent drainage properties and durability make it a top choice for both residential and commercial projects.

✅ Ideal for driveways, roads, and walkways
✅ Superior compaction for a solid foundation, Proctor testing available
✅ Great for erosion control and drainage

AVAILABLE FOR DELIVERY OR PICKUP
Call 724-668-2825 for pricing and to schedule.
We are located in New Alexandria, PA and deliver up to an hour from our Quarry.

04/06/2022

Open today! Call for delivery or stop by.

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Opening Hours

Monday 06:45 - 15:30
Tuesday 06:30 - 15:30
Wednesday 06:30 - 15:30
Thursday 06:30 - 15:30
Friday 06:30 - 15:30
Saturday 07:15 - 12:00

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