the United States Railroad Administration (USRA). It was also known as the "McAdoo Mikado" in the United States, after William Gibbs McAdoo who was appointed as Director General of Railroads when the United States commenced hostilities during the latter part of the First World War and the USRA was established. Of all of the USRA designs, the Mikado proved to be the most popular. The total American production was about 14,000, of which 9,500 were for local customers and the rest exported. "Mikado" remained the type name until the attack on Pearl Harbor in 1941. Seeking a more American name, "MacArthur" came into use to describe the locomotive type in the United States, after General Douglas MacArthur. After the war, the type name "Mikado" again became the most common for this locomotive type. Usage Locomotives of this wheel arrangement saw service on all six populated continents. The 2-8-2 type was particularly popular in North America, but was also used extensively in Continental Europe and elsewhere. Argentina broad gauge The Buenos Aires and Pacific Railway bought eighteen 2-8-2T locomotives in three batches of six as their class 701 class. The first two batches came from North British Locomotive Company in 1908 and 1912, the third from Henschel & Son in 1913. The BA&P also bought eight 2-8-2 tender locomotives from Beyer, Peacock & Company in 1928 as their 3001 class. The Central Argentine Railway (FCCA) bought fifteen 2-8-2T locomotives as their class C7 in 1912; they were built by Robert Stephenson & Company with works numbers 3506 to 3520. The FCCA also bought sixty 2-8-2 locomotives: twenty class CS8A from Beyer, Peacock & Company in 1926, and another twenty in 1928 from Robert Stephenson & Company. The final twenty to class CS9A were supplied by Vulcan Foundry in 1930. Both classes were cross-compound locomotives with one high-pressure cylinder with a bore of and one low-pressure cylinder with a bore of , with a stroke of . The earlier class had coupled wheels with a diameter of , whereas on the later class they were . Standard gauge The East Argentine Railway bought four 2-8-2 locomotives from Baldwin Locomotive Works in 1924. As class X they were numbered 70 to 74; they became General Urquiza Railway 701 to 704 in the 1948 nationalisation. Baldwin had classified them as 12-30--E. gauge The Province of Buenos Aires Railway bought a single 2-8-2 locomotive from