Which of the following is not a type of survey mentioned?

The question asks about the identification of a survey type that is not typically recognized within standard surveying practices. A topographical survey, which captures the contours and features of the landscape, is a well-established type of survey. This type is crucial for understanding land for construction, development, and environmental planning, making it very much a part of the surveying lexicon.

Boundary surveys, mining surveys, and astronomical surveys also have distinct and recognized roles in the surveying field. Boundary surveys are essential for establishing property lines and ownership, while mining surveys relate to the exploration and management of mineral resources. Astronomical surveys, although less common in everyday practice, are significant in the context of surveying for astronomical measurements and geodetic work.

Therefore, because topographical surveys are widely practiced and critical for various applications in surveying and land management, they are indeed a recognized category of survey, confirming that it cannot be the correct answer to the query of which is not a type of survey mentioned. This distinction emphasizes the importance of familiarizing oneself with various types of surveys in relation to their applications in different sectors.