Archived posting to the Leica Users Group, 2000/04/22
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Martin, you hit my button. I was formerly employed by a major silica sand supplier in the US. It is a fact that there are various quality and chemistry's in the Silica Sands. In other words, two manufacturers of glass can use the same formula but produce higher or lower grades depending on the quality of the silica. Of course the same is true of the other ingredients in the formula too. And...wouldn't you guess, the price goes up with the higher grades of silica and other ingredients. And now, you know the rest of the story. Cheers, Chuck