One of the most significant Congressional investigations in the postwar period is currently under way under the direction of liberal Democratic Senator Philip Hart of Michigan. These are the hearings which will extend over a two-year period before the Senate Subcommittee on Antitrust and Monopoly which is looking into the crucial problem of economic concentration in the American economy. The hearings should be of great interest for many reasons. Not since the 1930's, when the National Resources Committee published its landmark The Structure of the American Economy and the Temporary National Economic Committee accumulated mountains of data on the same subject, have the crucial statistics necessary for analyzing the extent and nature of concentration been made available.
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