For decades, Lagovan asphalt from Vz was the preferred roofing flux for making shingles in the US. Millions of tons of the stuff were delivered in tankers to the south and east coast and went into virtually all shingle makers’ products. The Vens discovered they could charge a premium for the asphalt, but then the revolutionaries had a better idea.
Blend the stuff off and sell it to China at a lower netback.
A Socialist breakthrough !
Here in Florida, and along the Gulf Coast of the US generally, asphalt shingles are going away in favor of metal roofs, because of hurricanes.
A friend of mine had a new Caddy back in 2004 during Ivan and it looked like someone had taken 80 grit sandpaper to the paint job after the hurricane, from blown off shingles from all over the neighborhood........
My house has a metal roof and so do most of our neighbors now.