The boundaries of CB 52 were laid out by a baseline extended from 55 S, initially laid out using a baseline shot with the transit off the grid point PC 1 and a second baseline extending from it at a ninety degree angle. Using triangulation a four by four meter trench was established with the northwest corner at a location of 58E/49S.
The coordinates of the four corners of CB 52 at thestart of the 2012 season are as follows:
NW corner: 58E/49S
NE corner: 62E/49S
SE corner: 62E/53S
SW corner: 58E/53S
A datum point with an absolute elevation of 27.24 meters was established on a tree along the north wall of CB 52.
Drawing of the trench layout
Drawing of trench in relation to the others
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