| 1952 ATLAS POWDER CO Delay Electric Blasting Cap |
| 1926 WILHELM Electric Time Fuse Blasting Cartridges |
| 1950 JOSEPH Electric Blasting Device Patent |
| 1926 GRANT Insulated Safety Electric Blasting Cap |
| 1959 CARTER Method Testing Electric Blasting Caps |
| 1945 DU PONT Electric Blasting Initiator Patent |
| 1952 MOWAT Delay Electric Blasting Cap Patent |
| 1956 OLIN MATHIESON Electric Blasting Cap Patent |
| 1959 OLIN MATHIESON Manufacture Electric Blasting Caps |
| 1922 CALIFORNIA CAP Waterproof Electric Blasting Cap |
| 1959 O'NEILL Electric Blasting Caps Patent Print |
| 1952 CANADIAN IND Delay Electric Blasting Cap |
| 1955 BLACKBURN Method Protecting Electric Blasting Caps |
| 1960 OLIN MATHIESON Electric Blasting Initiators |
| 1959 AMERICAN CYANAMID CO Electric Blasting Initiator |
| 1949 JOHNSON Electric Blasting Cap Patent Print |
| 1941 LOUGHEED Electric Blasting Initiator Patent |
| 1926 GRANT Electric Blasting Cap Patent Print |
| 1945 HANDFORTH Electric Blasting Initiator Art |
| 1955 OLIN MATHIESON Manufacture Electric Blasting Caps |
| 1949 MORTON Electric Blasting Cap Patent Print |
| 1961 DU PONT Electric Blasting Cap Patent Print |
| 1940 HANDFORTH Electric Blasting Initiator Art |
| 1941 JOHNSON Protective Electric Blasting Initiator |
| 1941 HARDT Electric Blasting Initiator Patent |
| 1954 HUYETT Igniter Jig Electric Blasting Initiators |
| 1960 SEAVEY Electric Blasting Initiators Patent |
| 1935 WILSON Shunt Electric Blasting Caps Art |
| 1954 MULQUEENY Electric Blasting Cap Patent |
| 1959 OLIN MATHIESON Electric Blasting Caps Art |
| 1932 ASIRE Electric Blasting Machine Patent |
| 1943 SMITH Shunt Electric Blasting Caps Art |
| 1940 JOHNSON Electric Blasting Initiator Patent |
| 1830 SHAW Electric Blasting Fuse Patent 51541 |
| 1941 BURGESS Electric Blasting Fuse Igniter Patent20936 |
| 1960 RAMER Protection Electric Blasting Caps Art |
| 1921 CALIFORNIA CAP Electric Blasting Cap Art |
| 1956 BAROCCA Electric Blasting Cap Patent Print |
| 1944 MILLER Electric Blasting Cap Patent Print |
| 1949 DU PONT Electric Blasting Cap Patent Print |
| 1962 BASH Method Sealing Electric Blasting Caps |
| 1941 JOHNSON Method Making Electric Blasting Initiators |
| 1955 OLIN MATHIESON Electric Blasting Caps Art |
| 1944 LAWRENCE Electric Blasting Cap Patent Print |
| 1950 HERCULES POWDER LTD Electric Blasting Art |
| 1933 DU PONT Electric Blasting Cap Patent Print |
| 1830 SHAW Electric Blasting Fuse Patent 9116 |
| 1944 ALEXANDER Method Packaging Electric Blasting Caps |
| 1965 SCHERRER Electric Blasting Cap Assembly Art |
| 1955 HENSCHKE Electric Blasting Caps Patent |
| 1926 ATLAS POWDER CO Electric Blasting Cap Art |
| 1942 DU PONT Electric Blasting Initiator Patent |
| 1954 OLIN MATHIESON Electric Blasting Cap Patent |
| 1934 KIRST Electric Blasting Cap Patent Print |
| 1959 BAYARD Electric Blasting Initiator Patent |
| 1931 JULIUS Electric Blasting Fuse Patent Print |
| 1922 OLIVER Waterproof Electric Blasting Cap Art |
| 1961 JOSEPH Electric Blasting Cap Patent Print |
| 1955 PAULS Manufacture Electric Blasting Caps |
| 1959 DU PONT Method Testing Electric Blasting Caps |
| 1942 JOHNSON Safety Primer Electric Blasting Caps |
| 1949 HERCULES POWDER LTD Electric Blasting Cap |
| 1943 WESTINGHOUSE ELECTRIC CO Blasting Machine |
| 1952 JEFFERY Delay Electric Blasting Cap Patent |
| 1921 LESLIE Electric Blasting Cap Patent Print |
| 1947 HERCULES POWDER LTD Electric Blasting Cap |
| 1965 HERCULES POWDER LTD Electric Blasting Cap Assembly |
| 1943 ICI LTD Useful Manufacture Electric Blasting Caps |
| 1959 O'NEILL Manufacture Electric Blasting Caps |