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Map (with old code, deployed locations in red, planned locations in grey)
Code: new (old)
Withdrawal log (4-5 Jan 2021)
100D: High acoustic noise was being generated from a telecomunication facility, ~10 m far from the spot where the geophone is deployed.
570D: The geophone is observed to be excavated possibly by construction here. The picture below shows the status as the geophone is when we revisit the site 57 on 4 January 2021. The date of the construction is unknown.
We accidently hit geophone's head by small pickax. Status should be check for future usage of the geophone (serial number = 453001871)