...shipments. [20] As the Supreme Court has observed in United States v. Philadelphia National Bank: * * * [a] merger which produces a firm controlling an undue...in a significant increase in the concentration of firms in that market, is so inherently likely to lessen competition substantially that it must be enjoined...

...cases, with elaborate proof of market structure, market behavior, or probable anticompetitive effects. Specifically, we think that a merger which produces...in a significant increase in the concentration of firms in that market, is so inherently likely to lessen competition substantially that it must be enjoined...

...cases, with elaborate proof of market structure, market behavior, or probable anticompetitive effects. Specifically, we think that a merger which produces...in a significant increase in the concentration of firms in that market, is so inherently likely to lessen competition substantially that it must be enjoined...

...appellee. 6 The presumption which the Court laid down in Philadelphia National Bank, supra, at 363, that "a merger which produces a firm controlling an...in a significant increase in the concentration of firms in that market, is ... inherently likely to lessen competition substantially . . ." was concerned...

...appellee. 6 The presumption which the Court laid down in Philadelphia National Bank, supra, at 363, that "a merger which produces a firm controlling an...in a significant increase in the concentration of firms in that market, is ... inherently likely to lessen competition substantially . . ." was concerned...

...in which the largest bank controlled under 30 percent of the resources.12 The Court also suggested that — * * * A merger which produces a firm controlling...percentage share of the relevant market, and results in ft significant increase in the concentration of firms in that market (provides a test which is) fully...

...States 370 US 343 (1962). In Philadelphia Snlirtiial Bank, the Court referred specifically to "a mercer which produces a firm controlling an undue percentage share of the relevant ma-- ket." 374 US 363 (1963). e* ". . . where concentration is gaining momentum in a market, we must...

...cases, with elaborate proof of market structure, market behavior, or probable anticompetitive effects. Specifically, we think that a merger which produces...in a significant increase in the concentration of firms in that market, is so inherently likely to lessen competition substantially that it must be enjoined...

...Bank and * The presumption which the Court laid down in Philadelphia National Bank, supra, at 363, that "a merger which produces a firm controlling an...in a significant increase in the concentration of firms in that market, is ... inherently likely to lessen competition substantially . . . ." was concerned...

...cases, with elaborate proof of market structure, market behavior, or probable anticompetitive effects. Specifically, we think that a merger which produces...in a significant increase in the concentration of firms in that market, is so inherently likely to lessen competition substantially tlint it must be...