Title: Portland stone
Content: Tuscany's marble quarries was imported by Albion Stone and applied to the extraction of Portland stone. This new technology eliminated the need for blasting, significantly improved the quarries' environmental performance and removed the potential for any possible damage to the stone being quarried through shock. Full account of the local jointing pattern is made when deciding the position and orientation of cuts. Once the quarry faces have been cut, the stone is gently displaced hydraulically. This is done using "hydro-bags", which are thin, flat, steel bags or envelopes that when inflated with water under moderate pressure, are capable of producing

Title: Retignano
Content: and Volegno, carrying out the first marble extraction in Versilia during the Industrial Revolution. Among the most important entrepreneurs interested in the quarries of Retignano there are: Sancholle, Beresford and especially Henraux. Montalto quarries became operative from the biennium 1818-1820, when it was possible to extract and then work a precious kind of marble very appreciated abroad and know, in Italian, as "bardiglio fiorito". The production was remarkable thanks to the high demand for this marble and its quality. However, the miners were forced to work in adverse conditions due to the inaccessible location of the quarries and the difficulty

Title: Retignano
Content: Hugh Camozzo, the then Archbishop of Pisa. To follow the Centenarian Celebration for the Unity of Italy, in 1964 Camozzo opened the cabinet, the bells that still syncs. The upper Versilia is characterized by several marble extraction sites. In particular, the gather of quarries located in Retignano, on the mount named Montalto (in English "high mountain"), ar quite well-known. In 1788, following the local decision to "liberalize mining" and with fundings from the Elisian Bank of Elisa Bonaparte Baciocchi, several Italian and foreign entrepreneurs chose to invest in Versilia and aimed to buy lands in the former comunelli of Retignano

Title: Marble, Colorado
Content: construction. The quarry has enjoyed a renaissance since its acquisition in 2004 by Polycor, a Canadian-based dimension stone company, and subsequent sale to Italian group R.E.D. Graniti S.p.A. In spite of significant transportation costs, this high-quality stone is now exported in large quantities to Europe and Asia for transformation and use throughout the world, as well as being sold into the US market. In the late 20th century and the 21st century, Marble has become a summer tourist destination. It is also the gateway to the nearby Crystal townsite. It is the site of the Marble/marble sculpting symposium held every

Title: Cipollino marble
Content: quarry. It is a metamorphic rock, a crystalline marble with crystals between 0.2 and 0.6 mm, with coloured veins of epidote and chlorite. A marble similar in appearance to cipollino marble was mined in the Iberian peninsula at the Anasol mines, and on the Alpi Apuane, in north-west Greece and Serbia. First used in ancient Greece, it was exported to Rome from the 1st century BC onwards: in his "Natural History", Pliny the Elder tells how columns of this marble were used in the home of the "eques" Claudius Mamurra, who had been an engineer for Julius Caesar in his

Question: Which quarry in the Italian region of Tuscany is renowned for the quality of its marble?
Answer: Carrara