## 7 Conclusions  
The obtained model represents the results of the research in order to examine the influence of burden deviation from the designed one on the intensity of the blasting vibrations through laboratory and field measurements. During laboratory testing, a large number of measurements were carried out for two different conditions: when the burden size is equal to the designed one and when there is burden deviation.  
Blasting vibration caused by the initiation of blastholes was monitored through the use of blasting seismographs placed at precisely determined distances from the blastholes. The obtained results from the laboratory measurements enabled a comparison of the values of burden and the values of the peak particle velocity, the basic parameters of the intensity of blasting vibration, for the cases with and without burden deviation.  
The statistical analysis of the measured data and the obtained diagrams clearly show the difference in the values of the peak particle velocity when there are larger values of burden deviation and for the case when the value of burden deviation is lower, i.e., when the burden is close to the designed one. Because the value of the burden size is variable along the length of the blasthole, the results were mathematically analyzed by examining the ratio of the peak particle velocity and the surface of the blasted material, which was taken for observation.  
The model obtained from laboratory testing was verified under real conditions in the blast field. The blastholes were initiated under different conditions of burden size while the peak particle velocity was monitored. The basic parameter of the model, coefficient K, which represents the ratio of the peak particle velocity and the surfaces of the blasted material from laboratory and field testing, indicates that there is a connection between these values, which can be seen through the results of the calculation. The deviation of coefficient K, as obtained from laboratory and field measurements, was 5.5%.  
The results of the measurements under laboratory conditions, especially in the field, depend largely on the characteristics of the material in which the tests are carried out. The presence of interlayers, cracks, and fissures in the rock material can have a significant impact on the effect of blasting and, thus, the intensity of the blasting vibration.  
The research presented in this paper was an attempt to find a direct dependence between the deviation in burden and blasting vibration, as well as the influence of increased burden deviation on the intensity of the blasting vibration. Since blasting vibration does not depend on just one blasting parameter, such as burden, it is necessary to carry out further research to improve the model in relation to other blasting conditions.  
From this laboratory model and terrain test, a numerical model can be designed in later research, which could maybe provide some predictions in terms of the blast vibration caused by burden deviation. This research can also be used to reduce factors such as blast vibration, fly rock, boulders, etc., as well as improve safety during blasting and environmental protection.  
Conceptualization, S.M.; methodology, S.M. and L.K.; software, S.M.; validation, M.N., N.S., J.M. and N.D.; formal analysis, S.M. and L.K.; investigation, S.M., L.K., M.N., N.S., J.M. and N.D.; resources, S.M., L.K. and M.N.; data curation, M.N., N.S., J.M. and N.D.; writing, original draft preparation, S.M.; writing, review and editing, L.K. and M.N.; visualization, N.S., J.M. and N.D.; supervision, L.K. and M.N. All authors have read and agreed to the published version of the manuscript.  
This research received no external funding.  
Data Availability Statement: Data is contained within the article.  
The author would like to thank the Serbian Ministry of Education, Science, and Technological Development for their support of the Project of Technological Development for TR33003.  
The authors declare no conflict of interest.