What are the basic principles that must be observed in blasting operations?

Blasting operations must adhere to the following basic principles:
1. The blasting personnel must pass the assessment, and after obtaining the blasting power, the blasting operation and the processing of the relevant blasting materials can be carried out;
2. After the blasting materials are taken to the working surface, they must be placed in a special gunpowder or gunpowder warehouse for safekeeping;
3. When the number of blastholes on the working surface is more than 5 and simultaneous blasting, the next ignition must be used, and no single ignition is allowed;
4. If an ignition failure occurs due to a working surface water ambassador, an electrical detonation should be used to prevent the occurrence of a rifle or a personal accident;
5. When using electrical blasting, all power sources within the safety regulations must be removed before the charging connection is made to prevent stray currents from being generated;
6. A warning signal must be issued before the shot is fired; immediately after the shot is fired for a period of time, before the warning signal and other work can be removed.

Children Book Printing

Children's Book Printing service refers to a professional service that provides printing services for children's publications. This service is typically provided by a printing house, publishing house, or self publishing author, and is designed to provide high-quality print for children's readers.
The characteristics of children's book printing services are high printing quality, bright colors, full patterns, clear fonts, easy to read, and in line with children's psychological and cognitive characteristics. Attention should be paid to the use of environmentally friendly printing materials during the printing process to ensure the health and safety of children.
Children's book printing services usually include design, plate making, printing, binding, and other links. In the design process, it is necessary to consider factors such as children's age, gender, hobbies, and other factors to design patterns and formats that meet children's aesthetic needs. In the plate making process, high-quality printing plates should be used to ensure the restoration of colors and patterns. In the printing process, high-quality printing equipment and environmentally friendly printing materials should be used to ensure the quality and safety of printed products. In the binding process, it is necessary to choose a binding method suitable for children to ensure the durability and ease of reading of the book.

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