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Schemes are described for injecting the 23 MHz cw H- beam from the TRIUMF 500 MeV cyclotron efficiently into a 30 Hz rapid-cycling synchrotron. We have considered extraction of 100-200 turn pulses from TRIUMF followed by multiturn injection into a dc accumulator ring mounted in the synchrotron tunnel. An alternative is to build a small isochronous storage ring to compact several thousand turns. Computer simulations of the various extraction processes will be presented.