Leaf coins were made while the dies were being changed to show George VI was no longer Emperor of India, as the title of "Emperor of India" was dropped from the titles of the Crown per article 7.2 of the Parliament of the United Kingdom's Indian Independence Act 1947. Composition throughout history Based on technical specifications provided by the Mint Act, only pennies produced from 1982 to their discontinuation in 2013 are still legally "circulation coins". From May 2006 to October 2008, all circulation Canadian pennies from 1942 to 1996 had a melt value of over based on the increasing spot price of copper in the commodity markets. The break-even price for a 2.8 g solid copper penny is /lb., with prices during this period reaching as high as /lb. Abolition There had been repeated debate about ceasing production of the penny because of the cost of producing it and a perceived lack of usefulness. In mid-2010 the Standing Senate Committee on National Finance began a study on the future of the one-cent coin. On December 14, 2010, the Senate finance committee recommended the penny be removed from circulation, arguing that a century of inflation had eroded the value and usefulness of the one-cent piece. A 2007 survey indicated that 37 percent of Canadians used pennies, but the government continued to produce about 816million pennies per year, equal to 24 pennies per Canadian. The Royal Canadian Mint had been forced to produce large numbers of pennies because they disappeared from circulation, as people hoarded these coins or simply avoided using them. In 2011 the Royal Canadian Mint had minted 1.1billion pennies, more than doubling the 2010 production number of 486.2million pennies. In late 2010, finance committee members of the Canadian Senate estimated that the average Canadian had as many as 600 pennies hoarded away, taken out of circulation. On March 29, 2012, the federal government announced in its budget that it would withdraw the penny from circulation in the fall of 2012. The budget announcement eliminating the penny cited the cost of producing it at 1.6 cents. The final penny was minted at the RCM's Winnipeg, Manitoba, plant on the morning of May 4, 2012, and was later entrusted to the Bank of Canada Museum in Ottawa. Existing pennies will remain legal tender indefinitely; however, pennies were withdrawn from circulation on February 4, 2013. The Currency Act says that "A