granite had been quarried in South Africa and announced that an investigative report would be delivered to the Metro Council Transit Committee the following week. The announcement was met with calls from King County Councilman Ron Sims to fire the responsible Metro officials who knowingly allowed the purchase. Metro's ban on South African goods was stricter than the federal sanctions, which only prohibited importation of specific materials such as steel, coal, uranium and agricultural products, and was used by UMTA to threaten to pull its funding for the bus tunnel project. A report by the Metro Council Rules Committee delivered in March stated that the granite's origin was discovered in early 1988, and was authorized by tunnel superintendent David Kalberer with the assumption that only a small amount would be used to furnish University Street station. Kalberer, who received praise for his work on the project before the scandal, admitted that the failure to consult the Metro Council's tunnel subcommittee before signing off on the deal was his mistake. Metro Director Alan Gibbs resigned on February 23 as a result of the scandal and was succeeded by technical director Richard Sandaas in September. The granite was rejected by Metro and was returned to the supplier in Italy. Before this discovery, in September 1987, African-American rights groups had forced tunnel contractor Atkinson/Dillingham to return 36 steel beams from South Africa used for temporary shoring at Pioneer Square station. This led Metro Director Alan Gibbs to propose a ban on South African materials by Metro for its projects, which was adopted by a resolution of the Metro Council on September 17. Opening and bus-only operation Regular service in the bus tunnel began on September 15, 1990, on five routes serving the University District, North Seattle, and Renton. The limited service was the result of delays in the manufacturing of dual-mode buses from Breda, which were fully delivered in 1991. The opening was preceded by soft openings of each individual station, beginning with Westlake station in August 1989, and ending with Convention Place station the day before the beginning of service. A ceremonial walk and run was held on September 9, 1990, and attracted 5,000 participants. In its first year of operations, the bus tunnel carried 28,000 daily passengers on 688 scheduled bus trips. The tunnel reduced the number of buses operated on 3rd Avenue at peak hours from 190 to 86, with