Large-Scale ProductionQuarrying Sites

Meeting the demand for white marble

Danby marble has become a household name, and Vermont Quarries Corp. is investing in equipment, as well as research and development of its quarry, to ensure it continually produces a premium material for its customers

By Jennifer Richinelli

An 80-blade Simec gangsaw is one of two gangsaws in the production area.

“We recently added the 50-blade gangsaw [in 2013] to help keep up with the demand,” said Todd Robertson, North American sales manager.

Three months prior to Stone World’s visit, the company invested in a Bennetti wire saw, which allows it to cut custom sizes and thicknesses.

The production area also includes a bridge saw for cutting custom-sized pieces.

After the slabs are cut, they are moved to a Simec NP 2100 RX polishing line, which is capable of putting a polished, honed or brushed finish on 5,000 square feet a day.

Two years ago, Vermont Quarries invested in a Prometec resin line, which is primarily used for vein-cut material.

A thin coat of resin is manually applied to the slab.

slab market — With both gangsaws running, Vermont Quarries can produce between 8,000 to 10,000 square feet â?? or roughly 175 to 200 slabs â?? per day.

Four Fantini chainsaws are in place at the quarry to extract the marble.

**Photos by Jason Kamery, except where noted**

white marble sink — “In the U.S., white marble is catching on,” said Robertson. “People are using it for kitchens because they know that Danby has a low absorption, which is very important.”

**Photo courtesy of Vermont Quarries**

marble wedding dress — Vermont Danby marble is also ideal for sculpting intricate pieces, such as this wedding dress.

**Photo courtesy of ABC Stone**

A top priority for Vermont Quarries is to ensure it has secured a rich source of high-quality white marble.

Three 988 H Cat block handlers are in operation at the site to transport the heavy marble blocks.

A wire saw is used to cut the blocks from the quarry wall.

At the time of Stone World’s visit, a second entrance to the Norcross quarry was being made, which Mannolini explained was required by the Mine Safety and Health Administration (MSHA).

With the demand forwhite marbleon the rise, Vermont Quarries Corp. of Mendon, VT, has amped up its efforts to produce its top-quality material more efficiently so it is readily available for its customers. Owned by R.E.D. Graniti and Mazzucchelli Marmi of Carrara, Italy, the company has the largest underground marble quarry in the world — stretching 1½ miles into Dorset Mountain. While Vermont Quarries took over the production and operation of the famous Danby Marble quarry in 1992, the white marble has been quarried for more than 100 years. Danby marble has been used for a variety of buildings and national monuments, such as the Arlington National Amphitheatre, the Supreme Court and the Thomas Jefferson Memorial, as well as other public buildings. Today, white marble has become the material of choice for many residential designs — particularly kitchen countertops and bathroom vanities.

“White marble is in demand,” said Luca Mannolini, general manager. “Danby has become a brand name. We are now getting requests from people around the world.”

Because of the growing popularity of Danby marble, Vermont Quarries has devoted time to research, development and investment in order to remain ahead of the curve. “In the U.S., white marble is catching on. People are using it for kitchens because they know that Danby has a low absorption, which is very important,” explained Todd Robertson, North American sales director. “We want to speed up delivery time and make it more efficient for our clients.”

Finding a viable source

A top priority for Vermont Quarries is to ensure it has secured a rich source of high-quality white marble. “It is important to research and do geological studies to find a viable source,” explained Mannolini. “You can spend millions of dollars on equipment, but it means nothing if you don’t have the marble.”

In 2007, the company opened the New Imperial/Norcross quarry, which sits 60 feet below the Upper Imperial Danby quarry. “The New Imperial Danby was opened because we needed another source of Imperial,” said Mannolini. At the time of Stone World’svisit, a second entrance to the Norcross quarry was being made, which Mannolini explained was required by the Mine Safety and Health Administration (MSHA).

Additionally, the Brook quarry, which had supplied Danby marble for many landmark buildings and monuments in Washington, DC, was re-opened in 2001. Today, it produces a selection of material, including Olympian White, Mountain White and Appalachian Green. The Imperial quarry produces the well-known Montclair, Royal, Eureka, Crystal Stratus, and of course, the majority of the company’s Imperial Danby.

The entire quarry sits on a 25-mile footprint and goes in 1½ miles in different directions. “We follow the vein of the marble,” said Mannolini.

In total, Vermont Quarries produces 1,500 to 2,000 metric tons of marketable blocks per month. On average, blocks measure 10 feet long x 5 to 6 feet high x 5 to 8 feet wide. For the slab market, the weight of the blocks range from 20 to 25 tons.

The quarry is equipped with three 988 H Cat block handlers to transport the heavy marble blocks. Additionally, four Fantini GU chainsaws and two Fantini floor chainsaws are in place to extract the marble. One of the floor chainsaws can operate a 5-meter blade. Recently, the company increased its workforce in the quarry to 35 employees because it started a second shift to keep up with the demand for its products.

Slab production

Inside the quarry, the company has a full production area set up for cutting slabs. “The unique thing about us is we quarry our own blocks and then cut our own slabs right here,” explained Robertson.

Blocks arrive on a 30-ton crane and then are moved to one of two Simec gangsaws — an 80 blade and newly added 50-blade saw. “We recently added the 50-blade gangsaw [in 2013] to help keep up with the demand,” said Robertson. “Having a second gangsaw also allows us to set up for a specific project and not disrupt the slabs being cut for our distributors. We also supply slabs from our sister company, Colorado Stone Quarries, and all of the Colorado materials produced, such as Calacatta Lincoln, Golden Vein and Statuary. Keeping up with the demand for these domestic white marbles is a constant battle.”

The gangsaws run two shifts. “Keeping up with the demand of our clients requires two shifts,” explained Robertson. “We know our distributors will take as much marble as we can produce. Our goal is to speed up production.”

With both gangsaws running, Vermont Quarries can produce between 8,000 to 10,000 square feet — or roughly 175 to 200 slabs from saw — per day. “That’s the demand,” said Robertson, adding that one shift takes between eight to 10 hours to cut a block. The company is looking to increase the capacity of the finishing process by adding a new polishing line.

Three months prior to Stone World’s visit, the company invested in a Bennetti mono wire saw, which allows it to cut custom sizes and thicknesses. The wire saw can cut up to 155 inches in length and 78 inches high, while a standard gangsaw can cut about 128 inches in length and 75 inches high. While the majority of slabs are cut to a thickness of 3 cm, some are cut at 2 cm and a little at 5 cm.

After the slabs are cut, they are moved to a Simec NP 2100 RX polishing line, which is capable of putting a polished, honed or brushed finish on 5,000 square feet a day. Once the slabs are off the polishing line, they are stacked, bundled and ready for shipment.

Two years ago, Vermont Quarries invested in a Prometec resin line, which is primarily used for vein-cut material. “Vein-cut is very popular and trendy right now,” said Mannolini. “Having a resin machine increases our yield of blocks.”

A growing brand

With the demand of white marble continuing to blossom, Vermont Quarries will continue to strategize and implement procedures and practices that will produce a high-quality product quickly. “We did a lot of investment,” said Mannolini. “The more you invest, the more you get back.”

According to Robertson, Vermont Quarries ships between 70,000 to 100,000 square feet of slabs a month to locations around the country — not counting custom jobs. “And the demand is growing,” he said. “We always have back orders.

“I see the demand going up and up,” Robertson went on to say, adding that the company also does a significant amount of commercial projects. “I travel around the country and talk to distributors. There are still so many people out there that don’t think white marble can be used in the kitchen. I like hearing that because that means there is still room for growth.”

Vermont Quarries has quite a few distributors — many in the New York Metropolitan area. “Some days we load three semi-trucks of slabs a day,” said Robertson. “The demand is just constant.”

As Group Editorial Director of Stone World, Contemporary Stone & Tile Design and TILE, Jennifer Richinelli has been covering the stone and tile industries since she launched her career at BNP Media in 1996. Throughout her tenure, she has visited and reported on numerous national and international quarries, stone fabrication shops, trade shows and other industry events. She has also collaborated with members of the A&D community, including many renowned architects, on articles about designing with stone and tile.

Contact Jennifer at richinellij@bnpmedia.com or (201) 245-5204.

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