Skilifts.org statistics on ski lift installations says that in 1974 the only two lifts installed in Michigan were built at Norvul. Both were double chairlifts, manufactured by Rice. One was 1725′ long with a 304′ rise and the other was 1765′ long with a 282′ rise.
I have not located more information about Norvul (that is not based upon the above lift survey). I don’t know if the area operated under that name, or if that was only the name of the base corporation and it operated under some other name.
On Dec. 30, 1976, the Cass City Chronicle printed the AAA Michigan 1977 List of Ski Areas. It said Vulcan USA in Vulcan had 2 chairs,1 rope and9 slopes. Was this the same area as Norvul? Was this the real name of Norvul? Was this even the same place?
By 1979, Briar Mountain was operating in Norway, apparently at the same location. Briar mountain had financial difficulties and called in Closser Associates, an appraisal firm, for a business analysis in 1979 and 1983. Closser recommended re-contouring the slopes to attract more beginners and intermediates.
Today, Norway Mountain operates at the site. Their website says they have been operating since 1993. They currently sport two double chairlifts, one serving expert terrain, the other intermediate and expert; and a triple chairlift serving beginner and intermediate terrain.
MILSAP 
It is my understanding that Neill Urban purchased Norway Mountain the spring before last season (2014/2015). Haven’t skied there yet but it was a great looking 500′ er when we stopped by last summer. Following these guys on Facebook, lots of improvements and plenty of active promotion to keep this jewel runnung. Hope to make it up for “Octoberfest” at the end of this month !!