Date Range
Date Range
Date Range
A collection of stamps figuring photos or images of minerals, cristals, gems, rocks, fossils and meteorites from around the world. Archive of First Day Covers. It features a gold and platinum necklace with diamonds, emeralds, turquoises and amethysts.
Gem, Rock, and Mineral Postage Stamps. Over the decades, many countries throughout the world have issued postage stamps that feature gems, rocks, or minerals as their topic. A selection of these stamps are presented here, for your educational enjoyment. This website is best viewed with a frame-enabled browser. Take this link to the first page in the set.
Ring and Roller Pulverizer Bowls. Bowl and Disc Pulverizer Bowls.
Turn off more accessible mode. D oing Business with an MTI Сompany. Lead Smelting and other Metal and Alloy Refining. Laser Distance and Level Measurement. Annealing Control Systems for Rolling Mills.