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Measurement of the Top Quark mass at CDF

We report the measurement of the Top Quark using complete kinematic reconstruction of events with a W and 4 jets. Included in this talk are a brief description of the technique, the observed results when applied to events before and after requiring a b‐tagged jet, and discussion of systematic aspects of the measurement. We additionally present results which indicate the presence of a second W in the events of decaying to two jets.