Table of Contents: Immigration and the labor supply; Charcoal, sulphur, and saltpeter; Walnut, the cabinet wood superlative; Work of making playthings; Some crudities on coal-tar crudes; Campaigning with Pyralin; Blowing a bank vault.
Periodicals; Chemical industry; Plastics industry; Textile industry; Explosives; Dynamite;
Table of Contents: President Jefferson used DuPont powder; The latest thing in vests; World's largest rock-filled dam; Cement production starts at the quarry; Have you a little Duco in your home; Pyralin used for mural decorations; Tackling the...
Vaults (Strong rooms); Security systems; Steel; War work; Banks; Correspondence;
Letter from the Remington & Sherman Company, bank vault manufacturers, to Bernard T. Converse in regards to the short supply of steel due to wartime shortages.
Letter from the City of Wilmington, Delaware to the Delaware Trust Corporation granting permission to use public areas for installation of the bank vault in the basement of the Delaware Trust Building.
