This vintage shaped charge explosive is a rare find for collectors of historical documents. The Plurajet Directions For Use, manufactured by the United States-based Shape Charge Explosive Manufacturers Inc. Of Martinsburg,  WV, provides a glimpse into the past and the techniques used in explosive mining. The charge is believed to have been made between 1900 and 1939, making it a valuable addition to any collection.

The document provides detailed instructions on how to use the explosive charge, along with its composition and design. This item is perfect for those interested in the history of mining and explosives, and is a must-have for collectors of rare documents.