The CB&Q 1958 Track Data and General Information - Lines East
and West that the archive committee made available says this about
burnt shale:
"The Sherwyco, a burnt shale is obtained from the Sherwyco pit at
Milepost 707 west of Sheridan, Wyoming. At this pit, which is in
the coal fields west of Sheridan, there are five seams of coal
with shale between each seam. Three of the coal seams have been
burnt out and the shale between them became burnt and hard. This
burnt shale is what we obtain and use as ballast. It makes a good
ballast for use where the country is dry and the traffic not too
heavy."
Plans at the time of this document were to use the burnt shale on
all Lines West lines with the exceptions of Pacific Jct. and
Denver (via Omaha), Oreapolis to Ashland, Ashland to Ferry, Napier
to Lincoln via Table Rock), Lincoln to Edgemont, Alliance to
Brush, Northport to Bonneville, and Bonneville to Fromberg.
Approximately 2,376 miles of track had Sherwyco ballast.
Bill Hirt
On 8/11/2019 6:59 PM, zephyr98072
wrote:
Rupert:
I looked at the alignment charts again. I don't know why
I didn't think of this before (and I knew it but it didn't
register), the alignment charts list the ballast as burnt
SHALE and not burnt clay. These materials may not be the
same, although I think they are similar, because one
definition of shale is clay that has been subjected to more
pressure.
I will develop the list any way. It looks like the use of
this type of material for ballast is more extensive than I
thought, as the line between Holdrege and (just west of)
Sterling appears to have about 75 miles of burnt shale
ballast.
I will have a closer look at its use on Sheridan Lines and
send you a list.
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