See the context of this sign.

Rock Asphalt

Rock asphalt was first mined at the
top or Whitmore Canyon—15 mi. NE of
this location—in the early 1890's.
The mine closed in 1898 & re-opened
in 1903. It operated erratically until
1915 when it was forced to close due
to the development of sheet asphalt.
In 1927 another co. tried to develop
a rock asphalt industry. They spent
over 1/2 million dollars on equipment
including a 3 1/2' mile gravity powered
arial tramway. To promote the use
of rock asphalt for paving, it was
sold for $8.00/ton even though
production costs exceeded $16.00/ton.
This co. went bankrupt in 1931 and
the Rock Asphalt Co. of Utah took
over in 1932. The mine operated only
about 2 months out of the year &
eventually closed. Interest was
re-kindled in teh 1970's but nothing
ever developed.

Dedicated July 10, 1993
Matt Warner Chapter 1900
E Campus Vitus

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