What does the term 'blasting cap' refer to?

The term 'blasting cap' specifically refers to a device that initiates an explosive charge. It plays a crucial role in detonation processes by providing the necessary energy to trigger a larger explosive material. Blasting caps can be electrically or non-electrically activated and are essential in various applications, including mining, construction, and demolition. Understanding the function of a blasting cap is fundamental in explosive safety practices, as it directly relates to the safe handling and use of explosives.

The other options pertain to different aspects of explosive safety but do not accurately define what a blasting cap is. Measurement tools, protective gear, and safety manuals play important roles in the overall safety and efficiency of explosive handling but do not serve the specific function of initiating an explosive charge as a blasting cap does.