In the TOC

Larry, in the TOC, I would like to attribute a Narrow Gauge Scale for your articles. What scale should I indicate?

In Southern Cal. coke came from oil refineries.

While taking a tour of the Cemex Plant as part of the 2008 NMRA National Convention in Anaheim Cal. we learned that coke was what was left over after all of the heavy light oils had been refined out of crude by the local refineries.  This coke was used by the Kaiser Steel mill in Fontana, Ca. for many years until the mill was closed down.  Then when the refineries didn't have any customers for the coke, Cemex in Victorville, Ca was receiving it for the cost of transport to use to fire the cement kilns.  When the oil companies found out that Cemex was a customer, they started charging Cemex for the coke, but since coke is a more efficient source of heat than coal, they continued to use the coke mixed with coal and old ground up rubber tires to fire the kilns.  I don't know how common this source of coke was for the rest of the country.