  Current absolute branching fractions of $\Lambda_c^+$ and $D_s^+$ mesons are
limiting the determination of important measurements. They have only been
measured at $e^+e^-$ colliders. Here techniques for measuring them at hadron
colliders are discussed. The precision determination of $\Lambda_c^+\to p
K^-\pi^+$ seems possible with current data, however the corresponding
determination of $D_s^+\to K^+K^-\pi^+$ will require more integrated
luminosity.
