BLAST MONITORING REPORT. HM22 Hard Stone Quarry at Wied Filep, l/o Naxxar 8th August 2016

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1 ems blast monitoring services Pimlico Flats, no. 5, Triq Viani, Sliema, MALTA Mob: BLAST MONITORING REPORT HM Hard Stone Quarry at Wied Filep, l/o Naxxar 8th August 06 Details Date Quarry number HM Victoria Lines l/o Naxxar Quarry operator Ballut Blocks Ltd. ANFO Supplier Framegrip Ltd. Police escort PC344 C Vella Location and Time of Blasting Four blasts were carried out between 09:30 and 09:44 at the points as approximately indicated on the attached site diagram. Summary of Blasting Conditions Maximum charge per delay: upper area:.5 Kg, lower area: 5 Kg Vibration limit: 4 mm/s (0 to 40) at the nearest residential areas within 00 metres. Air overpressure limit: 0 db(l). Site Specific Permit All holes were within quarry boundaries and within the maximum depth allowed. Maximum charge per delay was not exceeded. Blasting is carried out according to site specifications. Weather Observations Cloud cover: 0% Wind: light breeze, from the north Comments Holes making up blasts are at the bottom shelves of the quarry and blasts number to 4 are at a middle shelf of the quarry at their respective locations. Blasts number 3 and 4 were organised as a pairs and was detonated by means of two short-circuit exploders in very quick sequence (<s apart) and captured as one event by the seismograph _HM Report.doc Page of

2 ems blast monitoring services Notes about Monitoring The seismograph was placed at monitoring point M (Triq Brydone). The seismograph used is MiniMate Plus, serial number BE9488. The seismograph was set to trigger at 0.50mm/s. Readings 09:30 09:40 Number of Holes 9 Nunmber of Delays 9 Depth of Holes (m) Max. Charge/Delay (kg) Total Charge (kg) 3 Dist. from Seismograph (m) Peak Particle Velocity (mm/s) Frequency () Air Overpressure (db L) Scaled Distance (m kg-½) Blast Number Time : Burden is an average of metres, and distance between holes is an average of.5 metres. Weights in kilograms are rounded-up to the nearest ½ unit, and depth in metres is rounded to the nearest ½ unit. The plotting of the position of the holes on the attached site-diagram in relation to quarry shape and other landmarks is not accurate and no site survey was carried out to plot these. Displacement between the holes (as plotted on the diagram) and the seismograph is measured using the online version of MEPA s Map Server and is accurate to the nearest 0 metres. Number of holes, their depth, burden, and the amount of ANFO used are as given by the quarry operator (signed document attached). Scaled distance and maximum charge per delay are calculated from the primary data. Weights are rounded-up to the nearest kilogram and the depth is rounded to the nearest ½ meter. Observations There was no flyrock outside the quarry boundaries. No damage to the surroundings was observed after the blast. The ground vibration and air overpressure measured for all blasts are within the limits. Anthony Cini Anthony Cini B.Sc _HM Report.doc Page of

5 Event Report Date/Time Trigger Source Range Record Time at 09:30:5 August 8, 06 Geo: 0.50 mm/s Geo: 3.5 mm/s.0 sec at 4096 sps Serial Number Battery Level Unit Calibration File Name BE9488 V MiniMate Plus 6. Volts August 0, 05 by Datum Monitoring K488GHQT.3F0 Notes Location: Quarry Blasting Client: User Name: ems General: Microphone PSPL Channel Test Linear Weighting 95.9 db(l).50 pa.(l) at 0.30 sec 9.9 (Freq = 0. Amp = 565 mv ) BS 64:99 CURVE 3 No velocity above.00 mm/s Time (Rel. to Trig) Peak Acceleration Peak Displacement Frequency Overswing Ratio Peak Vector Sum 0.5 mm/s at sec mm/s db sec g mm Velocity (mm/s) xy z > Frequency () : + : x : ø AirOP.0.0 Time Scale: 0.0 sec/div Amplitude Scale: Geo: mm/s/div Mic: pa.(l)/div Trigger = Printed: September 6, 06 (V 0.4) Format Xmark Corporation

6 Event Report Date/Time Trigger Source Range Record Time at 09:40:3 August 8, 06 Geo: 0.50 mm/s Geo: 3.5 mm/s.0 sec at 4096 sps Serial Number Battery Level Unit Calibration File Name BE9488 V MiniMate Plus 6. Volts August 0, 05 by Datum Monitoring K488GHQT.J0 Notes Location: Quarry Blasting Client: User Name: ems General: Microphone PSPL Channel Test Linear Weighting 06.5 db(l) 4.50 pa.(l) at 0.4 sec 0.3 (Freq = 0. Amp = 565 mv ) BS 64:99 CURVE 3 Time (Rel. to Trig) Peak Acceleration Peak Displacement Frequency Overswing Ratio Peak Vector Sum.35 mm/s at 0.3 sec mm/s db sec g mm Velocity (mm/s) xy z x ø > Frequency () : + : x : ø AirOP.0.0 Time Scale: 0.0 sec/div Amplitude Scale: Geo: mm/s/div Mic: pa.(l)/div Trigger = Printed: September 6, 06 (V 0.4) Format Xmark Corporation

7 Event Report Date/Time Trigger Source Range Record Time at 09:44:46 August 8, 06 Geo: 0.50 mm/s Geo: 3.5 mm/s.0 sec at 4096 sps Serial Number Battery Level Unit Calibration File Name BE9488 V MiniMate Plus 6. Volts August 0, 05 by Datum Monitoring K488GHQT.QM0 Notes Location: Quarry Blasting Client: User Name: ems General: Microphone PSPL Channel Test Linear Weighting 0 db(l).000 pa.(l) at sec 4. (Freq = 0. Amp = 565 mv ) BS 64:99 CURVE 3 No velocity above.00 mm/s Time (Rel. to Trig) Peak Acceleration Peak Displacement Frequency Overswing Ratio Peak Vector Sum mm/s at 0 sec mm/s db sec g mm Velocity (mm/s) xy z > Frequency () : + : x : ø AirOP.0.0 Time Scale: 0.0 sec/div Amplitude Scale: Geo: mm/s/div Mic: pa.(l)/div Trigger = Printed: September 6, 06 (V 0.4) Format Xmark Corporation

BLAST MONITORING REPORT. HG12 Hard Stone Quarry at Ta Klement, l/o Qala Gozo 22nd January 2016

BLAST MONITORING REPORT. HG12 Hard Stone Quarry at Ta Klement, l/o Qala Gozo 22nd January 2016 ems blast monitoring services Pimlico Flats, no., Triq Viani, Sliema, MALTA Mob: 36 9944 767 Email: tcini@yahoo.com BLAST MONITORING REPORT HG Hard Stone Quarry at Ta Klement, l/o Qala Gozo nd January