| 1950 CAIRNS ROBERT Blasting Cap Patent Print Art |
| 1936 WALTER Mine Blasting Similar Operations Art |
| 1932 KARSTROM Blasting Method Art Print Patent |
| 1961 PAUL Blasting Cap Assembly Patent Print Art |
| 1946 PARR Separation Blasting Circuit Leads Art |
| 1940 HANDFORTH Electric Blasting Initiator Art |
| 1928 MAYER WALTER Blasting Gun Patent Print Art |
| 1960 DU PONT Blasting Machine Patent Print Art |
| 1936 VANDERPOOL Wetproof Blasting Cap Sealer Art |
| 1931 NASH HENRY Blasting Cap Patent Print Art |
| 1935 NORTH DON Blasting Cap Patent Print Art |
| 1924 STEERS NEWTON Blasting Cap Patent Print Art |
| 1926 HIRTHLER Cartridge Blasting Powder Art |
| 1961 DU PONT Blasting Cap Patent Print Art |
| 1953 DU PONT Blasting Machine Patent Print Art |
| 1935 SULLIVAN MACHINERY CO Blasting Art Print |
| 1933 AYER WILLIAM Blasting Cap Patent Print Art |
| 1923 CLARK PATENT TUBING CO Blasting Shell Art |
| 1926 JOY MACHINE Method Blasting Art Print |
| 1954 ICI LTD Blasting Method Patent Print Art |