Sean,
I finally remembered to drag out "Burlington Bulletin" #38. A total of eleven Jull plows were manufactured. There are a number of good photographs and several drawings of the plows in the Bulletin along with an excellent account of the plowing competition on Alpine Pass between the Jull and the Leslie plows. The text relates that the Jull derailed multiple times in a short distance due to the poor track conditions on the Pass. Jull admitted that his nose-heavy plow was too rigid for the curving narrow gauge line. The plow was returned to Denver and the Union Pacific still completed the purchase of the machine. It was fitted with standard trucks (including a compact six-wheel lead truck to support the weight of the front of the plow) and assigned to Trinidad, CO, numbered UP 066. The plow passed to the C&S in 1898 and carried, at various times, the numbers 02, 0200 and 99210. It was scrapped in 1929.
The two CB&Q Julls lasted twenty years longer than their C&S sister. 205025 was assigned to McCook, NE, and survived to work the Blizzard of 1949. It was scrapped the following June. 205026 was assigned to Sterling, CO, and also worked the Blizzard of '49 but overturned near Dalton, NE, and was scrapped in October 1949.
Purchasers of the Jull...? From what I can gather from the Bulletin, plows were sold to the following railroads:
Pennsylvania
Union Pacific
Burlington and Missouri River
Santa Fe
Illinois Central (yes the IC!)
West Shore (in New York) later going to the NYO&W
Chicago, St. Paul and Kansas City (Chicago Great Western)
Sioux City and Northern (later sold to the Soo Line)
I hope this helps.
Don C.