  The CHORUS experiment was designed to search for $\nu_{\mu}\to \nu_{\tau}$
oscillation by detecting the decay topology of the $\tau$ in charged current
(CC) $\nu_{\tau}$ events. The detector was exposed to the Wide Band Neutrino
Beam of the CERN SPS during the years 1994-1997. About $10^{6} \nu_{\mu}$ CC
events were collected in the nuclear emulsion target. Up to now, about 170,000
$\nu_{\mu}$ events have been located and analysed. The speed of the automated
emulsion scanning systems increases each year. With the present performance of
these systems, it has become possible to perform large volume scanning. All
tracks belonging to an interaction vertex can be recognized and measured
precisely. This technique is not only applied to the search for neutrino
oscillation but can also be used for the recognition of events where charmed
particles are produced. Results obtained from the analysis of a sub-sample of
the data on the production rate in $\nu_\mu$ CC interactions of neutral charmed
mesons ($D^0$) and charmed baryons ($\Lambda_c$) are presented. In addition a
new measurement of the branching ratio for the decays of charmed hadrons into
muons is given. Also measurements of topological branching ratios of $D^0$ and
$\Lambda_c$ are presented. Finally, a search for associated charm production is
discussed.
