Pit & Quarry, October 2018

SAFETY DRILLING BLASTING powder factor and prevent flyrock Over the past couple of decades technology was developed to aid in measuring this variable burden Two dimensional and three dimensional laser profilers photogrammetry and now drones can accurately measure burden and display it to the blaster in graphic and table form To use these technologies the open face must be completely clear and visible prior to loading holes In fact for best results the face should be mucked out prior to layout so holes can be placed in the proper position and require less loading adjustments Another reason for a high localized powder factor may be that the amount of rock present may be proper but too much explosives charge is present in an area due to cracks seams or voids The proper action to prevent this is to maintain an accurate drill log No high technology here just accurate note taking of these conditions by the driller The drill log should also provide information on the amount of loose or soft material in the collar zone so the blaster can make loading adjustments and prevent vertical flyrock OTHER DETAILS TO CONSIDER Improper blast area security during a blast event has been responsible for a number of injuries and fatalities over the years The blaster and quarry management should develop a plan ensuring that prior to the blast an inspection is made to determine that the area is evacuated that guards are posted at all entrances to the pit and that the guards are in communication with the pit foreman and blaster Recently it seems more operations rely on cell phones for communication during a blast event Personally I believe that two way radios are a better choice for communication with the guards pit foreman and blaster This allows for instant access to the blaster should a breach in security be detected just prior to detonation As in any venture the quality control and attention to detail put into a task will directly affect the results Blasting safety is no different Properly trained blasters accurate measurements and proper attention to every safety regulation will ensure consistent safe blasts P Q Joe Nawrocki is senior technical manager at Dyno Nobel United States Postal Service Statement of Ownership Management and Circulation Requester Publications Only 1 Publication Title Pit Quarry 2 Publication Number 1527 4594 3 Filing Date 9 20 18 4 Issue Frequency Monthly 5 Number of Issues Published Annually 12 6 Annual Subscription Price if any 6495 7 Complete Mailing Address of Known Office of Publication Not printer Street city county state and ZIP 4 North Coast Media LLC 1360 East 9th St Suite 1070 Cleveland OH 44114 Contact Person Antoinette Sanchez Perkins Telephone Include area code 216 706 3750 8 Complete Mailing Address of Headquarters or General Business Office of Publisher Not printer North Coast Media LLC 1360 East 9th St Suite 1070 Cleveland OH 44114 9 Full Names and Complete Mailing Addresses of Publisher Editor and Managing Editor Do not leave blank Publisher Name and complete mailing address Rob Fulop North Coast Media LLC 1360 East 9th St Suite 1070 Cleveland OH 44114 Editor Name and complete mailing address Kevin Yanik North Coast Media LLC 1360 East 9th St Suite 1070 Cleveland OH 44114 Managing Editor Name and complete mailing address Zach Mentz North Coast Media LLC 1360 East 9th St Suite 1070 Cleveland OH 44114 10 Owner Do not leave blank If the publication is owned by a corporation give the name and address of the corporation immediately followed by the names and addresses of all stockholders owning or holding 1 percent or more of the total amount of stock If not owned by a corporation give the names and addresses of the individual owners If owned by a partnership or other unincorporated firm give its name and address as well as those of each individual owner If the publication is published by a nonprofit organization give its name and address Full Name North Coast Media LLC Complete Mailing Address 1360 East 9th St Suite 1070 Cleveland OH 44114 11 Known Bondholders Mortgagees and Other Security Holders Owning or Holding 1 Percent or More of Total Amount of Bonds Mortgages or Other Securities If none check box None Full Name Complete Mailing Address 12 Tax Status For completion by nonprofit organizations authorized to mail at nonprofit rates Check one The purpose function and nonprofit status of this organization and the exempt status for federal income tax purposes Has Not Changed During Preceding 12 Months Has Changed During Preceding 12 Months Publisher must submit explanation of change with this statement 13 Publication Title Pit Quarry 14 Issue Date for Circulation Data Below August 1 2018 15 Extent and Nature of Circulation Free to Qualified Average No Copies No Copies of Single Each Issue During Issue Published Preceding 12 Months Nearest to Filing Date a Total Number of Copies Net press run 18271 18294 b Legitimate Paid and or Requested Distribution By mail and outside the mail 1 Outside County Paid Requested Mail Subscriptions stated on PS Form 3541 Include direct written request from recipient telemarketing and Internet requests from recipient paid subscriptions including nominal rate subscriptions employer requests advertisers proof copies and exchange copies 11917 10503 2 In County Paid Requested Mail Subscriptions stated on PS Form 3541 Include direct written request from recipient telemarketing and Internet requests from recipient paid subscriptions including nominal rate subscriptions employer requests advertisers proof copies and exchange copies 0 0 3 Sales Through Dealers and Carriers Street Vendors Counter Sales and Other Paid or Requested Distribution Outside USPS 2182 2308 4 Requested Copies Distributed by Other Mail Classes Through the USPS e g First Class Mail 0 0 c Total Paid and or Requested Circulation Sum of 15b 1 2 3 and 4 14099 12811 d Non requested Distribution By mail and outside the mail 1 Outside County Nonrequested Copies Stated on PS Form 3541 include sample copies requests over 3 years old requests induced by a premium bulk sales and requests including association requests names obtained from business directories lists and other sources 3607 4837 2 In County Nonrequested Copies Stated on PS Form 3541 include sample copies requests over 3 years old requests induced by a premium bulk sales and requests including association requests names obtained from business directories lists and other sources 0 0 3 Nonrequested Copies Distributed Through the USPS by Other Classes of Mail e g First Class Mail nonrequestor copies mailed in excess of 10 limit mailed at Standard Mail or Package Services rates 0 0 4 Nonrequested Copies Distributed Outside the Mail Include pickup stands trade shows showrooms and other sources 545 626 e Total Nonrequested Distribution Sum of 15d 1 2 3 and 4 4152 5463 f Total Distribution Sum of 15c and e 18251 18274 g Copies not Distributed See Instructions to Publishers 4 page 3 20 20 h Total Sum of 15f and g 18271 18294 i Percent Paid and or Requested Circulation 15c divided by 15f times 100 773 701 If you are claiming electronic copies go to line 16 on page 3 If you are not claiming electronic copies skip to line 17 on page 3 16 Electronic Copy Circulation Average No Copies No Copies of Single Each Issue During Issue Published Preceding 12 Months Nearest to Filing Date a Requested and Paid Electronic Copies 2655 2861 b Total Requested and Paid Print Copies Line 15c Requested Paid Electronic Copies Line 16a 16754 15627 c Total Requested Copy Distribution Line 15f Requested Paid Electronic Copies Line 16a 20906 21090 d Percent Paid and or Requested Circulation Both Print Electronic Copies 16b divided by 16c x 100 801 741 I certify that 50 of all my distributed copies electronic and print are legitimate requests or paid copies 17 Publication of Statement of Ownership for a Requester Publication is required and will be printed in the October 2018 issue of this publication 18 Signature and Title of Editor Publisher Business Manager or Owner Antoinette Sanchez Perkins Senior Manager Audience Development Date 9 20 18 I certify that all information furnished on this form is true and complete I understand that anyone who furnishes false or misleading information on this form or who omits material or information requested on the form may be subject to criminal sanctions including fines and imprisonment and or civil sanctions including civil penalties 44 PIT QUARRY October 2018 pitandquarry com