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may be made in the projection on the vertical plane, 
parallel to dump profile, or on the other vertical 
plane, oriented eg. according to the geodetical coor- 
dinate system of the mine. 
The interpretation is made mainly on the basis of 
different tone and the image structure occurring in 
the formation profile. In the case, when two for- 
mations have comparble reflectance to the coal 
  
  
Fig.3. Orthophotomap of an overburden - slope, presented at vertical plane with geological interpretation; P, 
P - sands, G - boulder clay; M - silt, I - varved clay, H - humus. 
Shadowed area indicate the zones masked by the slope relief and therefore is invisible from camera station. 
The orthophotomap was made in the vertical projection plane. 
The results of the geological interpretation can be 
also coded in the numerical form. This form of 
ground photogrammetric photographs elaboration 
enables the utilization of their geological contents 
to the automatic data processing within the ac- 
tualization of the geological data bank for the given 
deposit 
2. REMOTE SENSING AND PETROGRAPHICAL 
VALORIZATION OF THE DEPOSIT 
The documentation of geological deposit conditions 
by remote sensing was considering in two aspects: 
e the possibility and the range of remote detection 
of coal and non-coal formations, generally oc- 
curred in the roof of deposit, 
e the possibility and the discrimination range of 
the petrographical coal slope composition. 
The results of investigations indicate on the 
uniform identification of coal being among deposit 
formations, consisted of the sand groups with 
differentiated colour from the brown to white-grey 
tint, or consisted of loam formations with variable 
colour from different brown tints to almost black 
colour, or consisted of interbeddings, generally in 
white or in the creme-grey tint. 
in the visible range of spectrum and also the com- 
parable macroscopic features (eg.coal clay) - the 
recognizing them on the panchromatic photograps 
may be very difficult or even impossible (Fig.4). 
On the other hand formations of this type are very 
good discriminated on the near infrared images, 
although the main part play here the differences in 
moisture content at surface layer of these two for- 
mations. 
The interpretation of coal bed panchromatic pho- 
tographs allows for petrographic recognizing of 
its petrographical features. It appears that at 
the some time it is possible to recognize some 
lithotypes groups, namely: smudge coal and 
xyloid coal. Among the lithotypes groups it is 
possible to distinguish: smudge coal, bituminous 
smudge coal, and among xyloid coal group it is 
possible to distinguish: structural xyloid coal and 
fragile xyloid coal. 
The recognition of geological-deposit features has 
an essential significance for selective mining of coal 
slope, whose purpose is on the one hand the separa- 
tion of the useful components from another forma- 
tions, and on the other hand - the initial segregation 
of raw material having different technological 
parameters.