Re: Hauling Sand before Coverd Hoppers Became Popular

Tony Thompson

Todd Sullivan wrote:

The silica (the technical name for sand) has been shipped by covered hopper since the mid or late 1960s . . .

     Well, yes, the sand used for glassmaking is certainly silica, but most sand is by  no means pure silica. "Sand" is a term for finely divided rock, whatever the rock.
      Glass is almost entirely silica in any everyday application that we would call "glassware," but many other compositions (especially at Corning!) were produced, starting with glass sand.

Tony Thompson

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