Richardton, H5

Richardton fell in North Dakota at 21:48 on 19 June, 1918.  The bolide was seen up to 400 miles away, and sonic effects were heard as far as 250 miles from the fall location.  A great paper describing the fall can be found here.  An excerpt: Around 90 kilograms of stones were recovered from the ~ 9 by ~ 5 mile strewn field.  Most of the recovered material remains in museums.  The 185.2 gram part stone below came from an older collection.  An iron vein crosses the fragment; it is most clearly visible as a raised line in the fusion crust — see the second image, top right.