of the testing site (Fig. 1) was measured with use of a total station (see Section ), so for the southern part of the site there is no reference survey. The Upper Silesian Coal Basin has long been an area of underground mining. That is why its land geometry may change over time. Thus, the site had to be surveyed in short intervals in order
MODERN SURVEY INSTRUMENTS AND THEIR USE IN MINE SURVEYING Bahuguna**, Dheeraj Kumar**, Sunil Kumar*** *Associate Professor, ** Sr. Lecturer, ** Senior Technical Assistant Department of Mining Engineering, Indian School of Mines, Dhanbad 826004 ABSTRACT Although surveying techniques have always played a primary role in collecting data for mapping, recently new Instruments .