placer examination - blm - bureau of land managementplacers chiefly valuable for minerals such as monazite, rutile, cassiterite, ilmenite, etc., are . of placer concentrates, and marketing of gold: u.s. bureau of mines.
tin smelting at the oriental institute - oriental institute museumsmelting cassiterite for tin metal in such a container buried in considerable . contact the oriental institute publications sales of- . all inquiries, comments, and.
tungsten minerals and deposits - usgs publications repositoryand cassiterite in quartz, from black metal claims, near hill . inquiries from people in many walks of life for information about . in scheelite offered for sale.