cable derricks. One major 1990 alteration to the cliff was the blasting of a tunnel for access to the quarry interior. Today the marble is loaded onto a truck inside the mountain and driven out. Interior {| class="wikitable" |- ! Distance !! Dimension !! Area covered |- | || Portal span|| Right side of #1 to past the left side of #3 |- | || Down|| Through #3 as of today, in 1931 – |- | || Depth|| Through #3 as of today |} In the early years, the quarry was three separate caverns inside the marble formation. By 1914 a tunnel connected the three caverns. As the quarry went further down into the marble the three caverns eventually joined into one. The marble quarry is similar to coal mines and other underground mines in the need to constantly pump out water. With the marble dust created from the cutting, the floor is covered with marble mud. The interior temperature normally varies no more than 20 °F (11 °C) ranging from , although temperatures have reached from to a high of . Workers: 1908 to 1917 The number of people working in the quarry varied from 57 in 1910 to a maximum during the 1905–1917 boom of about 125. (Today that number varies between 15 and 20.) The 1910 Census shows most quarry personnel were American born, although the mill site employed more Italian-born workers. The 1910 Census recorded 57 quarry workers with 50 American born, 4 Italian, 2 German, and 1 Austrian. The marble mill employed 291 people of which 110 were American born and 120 born in Italy. As a side note, of the 481 town residents who were employed in 1910, 326 (66%) worked in the marble operation. Residence location showed only a few of the workers lived in Marble; the 1910 Census recorded 14 quarry employees there, and the rest lived in Quarry Town. Built by the CYMC, Quarry Town came into existence shortly after November 1908 as a settlement of bunkhouses and shacks just to the west and north of Quarry 1. It was built to alleviate a housing shortage caused by hiring more workers for the first large CYMC contract, the Cuyahoga County Court House, in Cleveland, Ohio. Though intended for single men, the 1910 Census recorded 66 residents of which 44 were men, 9 were women, and 13 were children. In the winter