## 3 Methodology of Research
\begin{table}
\begin{tabular}{c c} \hline \hline
**Description** & **Technical Specification** \\ \hline \multirow{5}{*}{Sensor Options} & ISEE Triaxial Geophone (2–250 Hz), DIN Triaxial \\  & Geophone (1–315 Hz), Swedish Blasting Geophone \\  & (5–300 Hz), Swedish Plle Driving Geophone (2–150 Hz), ISEE Triaxial Borehole Geophone (2–250 Hz), DIN Triaxial \\  & Borehole Geophone (1–315 Hz), ISEE Linear Microphone (2–250 Hz), Sound Level Microphone (Class 1) \\ \hline Dimensions & 101.6 \(\times\) 135.1 \(\times\) 44.5 mm (4.15 \(\times\) 5.32 \(\times\) 1.75 in) \\ \hline Unit weight & 0.5 kg (1.1 lbs) \\ \hline \multirow{2}{*}{Battery} & A 10-day rechargeable lithium-ion (optional 15-day \\  & battery upgrade available) \\ \hline User Interface & 10 domed tactile with separate keys for common functions \\ \hline Display & QVGA, 320 \(\times\) 240 color touchscreen \\ \hline PC Interface & USB \\ \hline \multirow{2}{*}{Auxiliary Inputs and Outputs} & External trigger and remote alarm (factory-installed \\  & option) \\ \hline \multirow{5}{*}{Environmental} & LCD Operating Temperature: –\(-\)10 to 55 \({}^{\circ}\)C (14 to 131 \({}^{\circ}\)F), \\  & Electronics Operating Temperature: –\(-\)40 to 45 \({}^{\circ}\)C \\ \cline{1-1}  & (40 to 113 \({}^{\circ}\)F), Operating Temperature: –\(-\)40 to 45 \({}^{\circ}\)C \\ \cline{1-1}  & (40 to 113 \({}^{\circ}\)F) (LCD screen saver enabled and set to a \\ \cline{1-1}  & maximum time-out of 2 min (Without USB sensors)) \\ \hline Remote Communications & Supported modems: Sierra WirelessTM Airlink® RV-50, \\  & GX-400, LS-300 \\ \hline \multirow{5}{*}{Optional Feature} & Printer: precision high-resolution; GPS: synchronize time \\  & and download coordinates; Vision (Cloud-based software): \\ \cline{1-1}  & provides stakeholders with secure, encrypted, access to \\ \cline{1-1}  & event data, and allows instant sharing for \\ \cline{1-1}  & time-sensitive projects \\ \hline \multirow{2}{*}{Electrical Standards} & CE Class B-The Micromate has been tested and passed \\ \cline{1-1}  & IEC 61010-1:2010 [32] \\ \hline \multirow{3}{*}{Record Modes} & Waveform, Waveform Manual, Histogram and \\ \cline{1-1}  & Histogram-ComboTM (unit captures triggered waveforms \\ \cline{1-1}  & while recording in Histogram mode) \\ \hline Serial number & UM11139 \\ \hline Manufacturer & Instantel—Ottawa, ON, Canada \\ \hline \end{tabular}
\end{table} 
Table 2: Technical specifications of the Instantel Micromate measuring instrument [31]. For all three cases, the burden size is shown, where multiple measurements were performed, i.e., initiation at three different values of the burden size, both in the designed conditions for each of them, as well as for those cases where there were deviations of burden size. This test was carried out to show how the designed burden for three cases, and all have some small deviations, which can be seen in the diagrams later in this text. Increasing the burden size from B = 20 mm to B = 30 mm and B = 40 mm, the surface of blasted material increased and affected blasting vibration. The second test was carried out on the same type of block to show how burden deviations influence the increase in blasting vibration. As in the previous test, initiation was performed for the value of burden B = 30 mm, but the additional initiation was carried out in the case when the burden is equal to designed one and in the cases when there are burden deviations. The deviations observed that are of interest for analysis are those that represent the higher burden values than the designed ones because, based on previous research, increased burden size increases vibrations. Deviations are examined in relation to the surface of the blasted material, the information of which we obtained from the software, as shown in Figure 9.  
Figure 8: Model of blocks for different burden values with the positions of the measuring points. Figure 9: The process of obtaining surface of blasted material data from the model using O-Pitblast software.