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For audit investigations m area of work safety mauagement a simple random dependent selection rnethod was used - "test mother sample" was defined as being 6-10 % of generał population. Receiving level of a test santple is assured both by imestigations of workers representatives from each essential organizational level of minę (tactical audit) and by im estigations of representatives of individual professional groups in departments (operational-sectional audit), or in woikplace (audit of safety in workplace). As we can see the safety audit is assured for a grcat part of mining staff not only by undcrtaking particular audit activities, but also by pennancnt activity. i. e. repeated within closely defined time outlooks (for a safety audit realized on tactical level such period is 12 months).

By establishing a finał opinion WZBi for an object (minę, organization separated from enterprise's structure. workplace). and also by detennining partial opinions WOPi (it means opinions for individual problem areas) it is enabled tlie following:

> to compare objects between themselves:

> to follow a tendency or trend of changes:

> to show strong sides or weak sides in area of occupational safety mauagement

Mathcmatical model of cvaluation

For process of evaluation of ąuality of occupational safety management we used a questiomiaire poll. Based on results of such research a matrix was developed. the horizontal lines were coordinate a\es treated as points Pi in identification space and columns are the next problem areas within frame of occupational safety management [5]:

x„ x_l2 ... x_lrx_2l x₂₂ ... x₂,

x_ml x_m! ... x_mr

m - object which was examined (minę. organization separated from structure of enterprise. woikplace in a department or section),

r - problem area of occupational safety management.

Example

Research audits w ere madę in twehe workplaces of mining department in underground minę "Budiyk”

S A. [5j:

> senice of cutter-loader in a longwall face of department G1:

> service of cutter-loader In a longwall face of department G2:

> service of cutter-loader in a longwall face of department G3;

> sen ice of face comeyor in longw all face of department G1:

> service of face conveyor in longwall face of department G2:

> sen ice of face com eyor in a longwall face of department G3;

> operator of powered support in a longwall face of G1:

> operator of powered support in a longwall face of G2;

> operator of pow ered support in a longwall face of G3:

> securing of cutter-loader stable hole in longw all face by crew of G1:

> securing of cutter-loader stable hole in longwall face by crew of G2;

> securing of cutter-loader stable hole in longw all face by crew of G3

Questions conceming the domain of occupational safety management are grouped in 12 problem areas (from A to L). The obtained answ ers enable building-up of an evaluation matrix:

0,75 0,75 0,9375

0,5625 0,625 0,6875

0,9375 0,875 1

0,5 0,625 0,6875

0,9375 1 1

0,8125 0,5 0,5625

0,5 0,5 0,6875

0 0,75 0,4375