Hole number

Character

Diameter/mm

Direction/˚

Elevation Angle/˚

Hole depth/m

Observation time

CQ1

Hole before mining

Ф94

335

55

78

June 29^th morning shift

CQ2

Hole before mining

Ф94

340

50

85

June 30^th morning shift

CH1

Hole after mining

Ф94

348

45

89

August 24^th mid shift

CH2

Hole after mining

Ф94

350

50

82

August 23^rd mid shift