sentences:  In 1825, after an exhaustive search throughout New England, Solomon Willard selected the Quincy site as the source of stone for the Bunker Hill Monument in Charlestown.After many delays and much obstruction, a charter was granted on March 4, 1826 for the construction of a railroad to help move the granite.The "Granite Railway" was designed and built by railway pioneer Gridley Bryant and began operations on October 7, 1826.