COURSES IN MINING, METALLURGY, AND GEOLOGY 265

sator types, Wilfley and Diester tables, a Johnson suspended vanner, a Ding
and a Grondal magnetic separator. Each machine is an independent unit
provided with ample head room to permit sampling its feed and products,
and with pipe and launder systems and pumps or elevators to return these
products for continuous treatment when desired. Classifiers, settling and
dewatering cones, are provided so that various units may be grouped and
large lots of ore tested under milling conditions when this is desirable.

For testing gold and silver ores a battery of two 850 pound stamps,
amalgamating tables together with laboratory leaching apparatus are avail-
able.

In process testing initial classroom testing is performed and small lots
of ores are tested in small equipment to determine methods best adapted to
their successful treatment. For this purpose small scale laboratory jigs,
tables, classifiers, and flotation equipment together with laboratory leaching
apparatus are available. For the rapid examination of ore dressing prod-
ucts microscopes are provided.

For research in ore dressing a well equipped laboratory for faculty
members and advanced students is maintained.

For making and testing clay products a pug mill, an auger brick and
tile machine, a wet and dry pan, a repress, a cutting table, and an oil-fired
down-draft kiln are available.

The mining museum contains models of several types of surface and
underground mine structures, mine models and the various types of rock
drills used in mining and quarry practice. .

In the metallurgical museum there is an extensive exhibit of casting's
illustrating quality of product, gating, and the use of risers. Another series
illustrates defects in castings. Samples of all foundry material are in-
cluded. The collection of iron blast furnace slags, with the operating data
under which they were produced, is probably the most complete in the
United States.

While not required from undergraduates for graduation, a thesis upon
some suitable subject may be submitted by students who have an interest in
research. This thesis will replace an equivalent amount of work regularly
required for graduation.