On-Line Certification Exams

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DCDMA Products

Did you know that as a privilege of membership, NDA members can purchase gages through the NDA at a reduced rate? Please contact the NDA office at 877-632-4748 or e-mail gages@nda4u.com with a list of the gages you would like quoted.
NDA now accepts credit cards as payment for gage orders (a 5% processing fee will apply).

Shop NDA

NDA has developed several safety and training materials and other informational resources to benefit drilling industry professionals. These resources include the NDA Drilling Safety Guide, Driller's Manual, Safety Label Kits, Tailgate Safety Tips and more. Click Here to shop for NDA products on-line.

The National Drilling Association is a nonprofit trade association of contractors, manufacturers and affiliated members from the drilling industry representing the geotechnical, environmental and mineral exploration sectors of this industry. The NDA mission is to promote the use of professional drilling contractors and their methods.

One-Day Training Refresher for
Field Inspection of Geotechnical Site Investigations

August 3, 2015
Millersville, Maryland
Click here for information & registration

2015 NDA Convention
September 17-18

Turf Valley
Ellicott City, Maryland


Exhibitor Tables and Sponsorships Available
Click here for more information

NDA Safety Award Program

The program allows drilling contractors of similar size to compete for an award based on their incident rates. Safety Award recipients will be honored, each year, at the NDA Annual Convention.
Deadline for entries was June 30th.

Why I belong to the National Drilling Association:

"Certainly the open exchange of information through the organization is key. Often we utilize our membership experience to get assistance from other contractors in our area when we may need a question answered, or when we need the help from others to cover project schedules. Though we are all, to some degree, competitors, Kimball will always extend aid to any member working in our area. If we can't directly assist, we'll help a member to get the assistance they require."

Patrick Replogle
LR Kimball
Ebensburg, PA
Member 16 years

Our thanks to these Drill Bits magazine Advertisers:

Acker Drill Arthur J Gallagher BaroidCME GeoprobeHoffman Diamond Mobile DrillSonic Drill

Thank you to these 2015 NDA Convention Sponsors:

Thank you to these 2015 NDA Convention Exhibitors:


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