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    Before hot mix asphalt was invented, most paved roads in the USA were created by spraying hot asphalt liquid cement on top of compacted gravel. In many rural areas of the USA, this tar-and-chip method of paving is still used on thousands of miles of secondary roads. I had a medium-brown driveway that used chert road metal from the Meramec River region in Missouri.

      New Yorkers have been urged to limit their time outdoors and wear masks  as smoke from wildfires in Canada continues to blanket the city.  Many residents are left concerned over the air quality and wondering if it’s safe to run the air conditioner in these conditions.  We’ve gathered some in…

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