- Aug, 2017, Number 85: Newsletter No 85 - Benefits of Dynamic Pile Testing
- May, 2017, Number 84: Newsletter No. 84 - Static and Dynamic Load Testing of Large Diameter Pipe Piles
- Jan, 2017, Number 83: SQUID Evaluates Bottom of Drilled Shafts
- Sep, 2016, Number 82: PDI-TOMO Helps GRL Evaluate Shaft
- May, 2016, Number 81: 40 years of GRL Engineers
- Jan, 2016, Number 80: Converting Project from CSL to TIP Leads to Cost Savings and Accelerated Construction Schedule
- Sep, 2015, Number 79: Large Diameter Open End Pipe Piles - Challenges & Opportunities
- May, 2015, Number 78: PDI and GRL at IFCEE 2015
- Jan, 2015, Number 77: Dynamic Load Testing Using The Apple VIII
- Sep, 2014, Number 76: Evaluating CFA/ACIP Piles
- May, 2014, Number 75: The ß-Method,Reliable and Proven for Pile QA/QC
- Jan, 2014, Number 74: One Expert's Test is Worth a Thousand Unprofessional Attempts
- Sep, 2013, Number 73: Dynamic Monitoring of Piles using Remote Testing Capabilities
- May, 2013, Number 72: Underwater Dynamic Pile Testing
- Jan, 2013, Number 71: Jet Grouting: An Application of Thermal Integrity Profiling
- Sep, 2012, Number 70: Development of Automatic Signal Matching Procedure - iCAP®
- May, 2012, Number 69: Dynamic Testing of Helical Piles
- Feb, 2012, Number 68: Dynamic Load Testing Conforms to new ASTM D7383 Rapid Load Testing Standard
- Sep, 2011, Number 67: Progress
- May, 2011, Number 66: Thermal Integrity Profiler
- Jan, 2011, Number 65: Integrity Is Just the Beginning
- Sep, 2010, Number 64: Forever Wave Equation
- May, 2010, Number 63: iCap™ - A New Wave for Dynamic Testing
- Jan, 2010, Number 62: Remote Dynamic Foundation Testing
- Sep, 2009, Number 61: Just Drop an APPLE
- May, 2009, Number 60: The Marquette Interchange, Milwaukee, WI
- Jan, 2009, Number 59: Stresswave 2008: All you need to know about dynamic foundation testing
- Sep, 2008, Number 58: Can PIT do it all?
- May, 2008, Number 57: Advances in dynamic Foundation Testing
- Jan, 2008, Number 56: FHWA Releases GEC 8 - Design and Construction of CFA Piles
- Sep, 2007, Number 55: Criteria for Evaluating CSL Data
- Apr, 2007, Number 54: Capacity Confusions in 2007
- Nov, 2006, Number 53: Continuous Flight - a tour of job sites
- Apr, 2006, Number 52: Cross Hole Sonic Logging: Assuring quality under challenging circumstances
- Dec, 2005, Number 51: Dynamic APPLE Load Testing Over Water
- Jun, 2005, Number 50: Testing Self-Consolidating Concrete
- Jan, 2005, Number 49: Cost-Effective High Capacity Piles through Soil Set-up
- Sep, 2004, Number 48: 7th Stresswave Conference Roundup
- Jun, 2004, Number 47: Penetration Testing Today
- Feb, 2004, Number 46: Dynamic Testing of Micropiles
- Oct, 2003, Number 45: Installation Inspections: Why, What, When?
- Sep, 2003, Number 44: Test Shaft Installation for CSL
- Jan, 2003, Number 43: Just Run a Wave
- Sep, 2002, Number 42: Crosshole Sonic Logging
- Jun, 2002, Number 41: Berkel & Company Contractors Uses Latest Technology for Pile Monitoring and Testing and ASCE Deep Foundations Congress in Orlando, FL
- Jan, 2002, Number 40: Remote Pile Testing with Pile Driving Analyzers®
- Jun, 2001, Number 39: Times are Fast… and so is Pile Testing
- Dec, 2000, Number 38: Newton's Apple Falls in Amherst
- Jun, 2000, Number 37: Deep Foundations: Believing Without Seeing
- Feb, 2000, Number 36: "Class A" Capacity Predictions
- Aug, 1999, Number 35: Wave Equation Analysis - What it Can and Cannot Do
- May, 1999, Number 34: What is Pile Capacity?
- Dec, 1998, Number 33: The Pile Installation Recorder
- Apr, 1998, Number 32: Driving Stresses in Piles
- Nov, 1997, Number 31: GRL Tests Drilled Shafts
- Apr, 1997, Number 30: High Strain Dynamic Testing of Drilled Shafts
- Dec, 1996, Number 29: Testing Existing Pile Foundations
- May, 1996, Number 28: The GRL Updated FHWA Pile Design Manual
- Dec, 1995, Number 27: SPT Improvements
- Aug, 1995, Number 26: Routine Testing or a Professional Service?
- Apr, 1995, Number 25: Hydraulic Hammers and GRLWEAP
- Nov, 1994, Number 24: Load Confusions
- Jun, 1994, Number 23: Orlando: City of Pile Conferences
- Dec, 1993, Number 22: As the Year Ends
- Sep, 1993, Number 21: GRL Engineers Test Modified SPT
- May, 1993, Number 20: CAPWAP® - A Registered Trademark
- Nov, 1992, Number 19: GRL at Fourth International Stress Wave Conference
- May, 1992, Number 18: PDA Users Days Held in Singapore and Nanjing
- Dec, 1991, Number 17: 1991 Users Days Show Powerful Equipment and Software in Cleveland, OH and London UK
- Apr, 1991, Number 16: 1991 GRL Engineers Meeting
- Dec, 1990, Number 15: 1990 PDA Users Days Series Completed
- Aug, 1990, Number 14: 1990 PDA Users Days Held in Europe, USA
- Apr, 1990, Number 13: 1990 PDA Users Days Slated
- Dec, 1989, Number 12: GRLWEAP News
- Aug, 1989, Number 11: New Representatives in Europe, Far East
- Mar, 1989, Number 10: London, Cleveland PDA Users Days Slated
- Dec, 1988, Number 9: PDA Users Days in Singapore and Beijing
- Aug, 1988, Number 8: 1988 PDA Users Day - International Event
- Mar, 1988, Number 7: Calendar of Events
- Nov, 1987, Number 6: Research Continues at University of Colorado
- Jun, 1987, Number 5: PDA Users Make Waves
- Feb, 1987, Number 4: GRL Joins National Engineers Week Celebration
- Nov, 1986, Number 3: DFI Engineers Gather in Houston
- Jul, 1986, Number 2: PDA Users Day is International Event
- Apr, 1986, Number 1: You Are Cordially Invited to Users Day 1986