"At the time of existence Vermont Marble Company employed more than 4,000 men; had offices, quarries, and shops throughout the U.S. and distributed 1 million cubic feet of marble around the globe annually. The Danby quarry is one, if not the only, marble quarry from this historical time period that is still active and growing," the official website says.

"The Vermont Danby Marble® was used in many buildings and monuments that have come to symbolize American Civilization, such as the Arlington National Amphitheater, the Supreme Court and the Thomas Jefferson Memorial.

"Today the Vermont Danby Quarry is owned by RED Graniti and Mazzucchelli Marmi of Carrara Italy and is operating as Vermont Quarries Corp. It is the largest underground marble quarry in the world stretching 1 1/2 miles into Dorset Mountain."

"Vermont Quarries is the source of Danby marble, a stone with a devoted following among kitchen designers and homeowners and a rich history in American architecture. But the company – quite literally – is on the downlow. “If you know where to look,” says Prvulovic, “you would see a white open space in the middle of a forest,” the Use Natural Stone says.

"Tucked inside Dorset Mountain is the world’s largest underground marble quarry, spanning an area of about 16 football fields and stretching for over a mile – all underground. There’s one entrance to the Vermont Danby quarry, and it’s the same one that’s been in use for over 100 years.

"Since its rebirth in 1993, the company has made steady improvements, from machinery, to workforce training, to customer relations. Mannolini is quick to credit his core team, which includes Prvulovic and quarry manager Keith Millard. While Prvulovic keeps the marble flowing to customers, Millard drives the operation from the opposite end, as he organizes the quarrying to keep a steady supply of fresh stone."

"Since it began operating in 1903, Danby Quarry has grown to become the largest underground marble quarry on the planet. Its tunnels, ramps, and vast caverns twist and turn to a depth of 1.5 miles, and its marble has been used in famous structures including the Jefferson Memorial and the U.S. Supreme Court building," the Atlas Obscura says.

"Also located within Dorset Mountain is the onsite production facility, which itself is one of the largest such facilities in the United States. Here, the marble is cut and shaped into blocks and slabs, ready for immediate export to projects across the globe.



"Marble from Danby has been used in the construction of many famous buildings, including the U.S. Supreme Court Building, Jefferson Memorial, New York Public Library, the United Nations Building, the Sama Bank Building in Saudi Arabia, and the Chiang Kai-shek Memorial Hall in Taipei, Taiwan. Martha Stewart also used Danby marble in her home, giving Danby the ultimate seal of approval when it comes to kitchen countertops."

"The adventure to visit the quarry is one we enjoy. When the quarry began operation around the turn of the 20th century, the entrance was carved out of the mountain, and we still use that entrance today. When we arrive, we literally drive into the side of the mountain and then travel 1.5 miles down into the quarry. The mean temperature there is 50°F 365 days of the year – a fun fact we’ve learned in our years of visiting there,"  the Boston Granite Exchange says.

"There are several types of Danby marble. Among the best known and most popular are Imperial, Olympian and Mountain White. Boston Granite Exchange showcases all of these beautiful Danby marble designs in our showrooms. We invite you to visit one of our showrooms and see the many beautiful natural stones and quartz we carry.  Be sure to look for Danby marble and see its beauty close up now that you know the story behind the stone."

"A white marble quarry (dimension) located 1.6 miles SW of Danby, on private land. First operated in 1840. Owned and operated by the Vermont Marble Co., Proctor, Vermont. The largest underground marble quarry in the world (area 8.499 HA; length: 609.6 meters; overall depth: 152.4 meters)," the Mindat.org says.

"Rock is Early Ordovician dolomite of the Shelburne Formation. There are 9 distinct layers, each with their own texture. Geologic units near the site, calculated from the appropriate geologic map, are the Shelburne, Whitehall, and Strites Pond Formations. A trap dike (camptonite) parallels the axis of the fold on the East and a shear zone parallels the axis on the West. These bracket the workings.

"Workings include surface and underground openings. The underground opening is an active tunnel at the N end of the group of quarries and extends S underneath the old surface quarries."

"The former Vermont Marble Co.’s Imperial Danby Quarry is the world’s largest underground marble quarry—a 28-acre cavern that has been in operation since 1906," the Mt. Tabor-Danby Historical Society says.

"The 1-mile long tunnel snakes down some 600 feet into the bowels of the mountain, which is part of what is known as the Shelburne Formation — a 450-million-year-old marble deposit that stretches from the Massachusetts border north to Colchester. The formation is part of an ancient, continental shelf that extended from Georgia to Newfoundland, according to University of Vermont geologist Barry Doolan.

"The quarry, with its labyrinth of passageways, is damp and dimly lit. Water from underground springs drips from the ceiling and turns the marble dust underfoot into white mud. In the distance, the sound of a large flatbed truck echoes off the marble walls and 30-foot-high ceilings as it arrives to pick up a shipment."

"Marble from Danby Vermont is well known for it’s clean white overall coloration with light veining. Danby Gray Marble is a Marble quarried deep below the earths surface with mixed busy grey veining in light and dark tones. Rather offering a very soft overall coloration with lots of character,"  the Vermont Marble, Granite says.

" In addition Danby Gray marble is also one of the major white marbles used for many buildings in Washington D.C. We offer Slabs, Tiles, Custom Countertops, Sinks, Urns, and more!

Typical Slab Sizes are: 104-108″ x 54-62″ | Also available in 3/4″ and 1 1/4″ thick polished or honed."

"The Danby quarry** is located on the northeast flank of Dorset Mountain in Danby. It is the world’s largest underground quarry, covering 25 acres. It lies in a broad depression 75 feet thick at its center and up to 500 feet wide. In 1971, direct road access was developed," the Department of Environmental Conservation says.

" Haul roads and ramps into the quarry lead to the present work area some 2,800 feet into the mountain. The quarrying operation uses a “room and pillar” technique, leaving piers about 30 feet square between 40 foot wide “rooms.”

"Blocks removed from the Danby quarry have weighed up to 93 tons and have been used in the Supreme Court Building, Jefferson Memorial, United Nations Building, the Sama Bank Building in Saudi Arabia, and the Chiang Kai-Shek Memorial."

"When most of us picture Vermont quarries, we think of the magnificent sight of the Rock of Ages location. Perhaps we envision jumping into the the Dorset quarry on a hot summer day. There is another amazing quarry in Vermont that is the largest in the world of its kind, and it’s not the place to go if you’re claustrophobic!" the Only In Your State says.

"The marble is cut to size and this facility can produce up to 4,000 square feet of marble per day. Today some of the world's most beautiful marble still comes from the Danby Quarry.

"The onsite production facility here just may be the largest in the country. When you pair it with the world's largest underground marble quarry, it's clear that this is a one of a kind place."

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