🚀 go-pugleaf

In article <24560@oasys.dt.navy.mil>, hanners@oasys.dt.navy.mil (Robert Hanners) writes...
>In sci.engr, quopingl@cs.umr.edu (Quo-Ping Lin) writes:
>>the sand as "green sand."  Dose anyone knows where the word "green" came
>>from?  It looks black for me.
>I'll take a crack at this although it's been 30 years since I've been
>exposed to the topic.  As I recall, "green-sand" is sand containing a small
>amount of clay and moisture to permit packing and provide some strength.
>The term "green" thus refers to new or not fully processed.  "Dry-sand",
>on the other hand, is sand and linseed oil or other resins that is packed,
>then dried and/or baked to give much stronger properties such as needed
>for cores.

"green" refers to uncured (wet) as in "green" concrete...


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