Vibration Control Taking Some of the Explosion Out of Dynamite Detonation

As a $9.25 million State Highway Administration (SHA)making. For almost 40 years, the product line has
plan to improve Route 24 in Maryland gets underway,served as the main focal point of research and
engineers promise that "the detonations anddevelopment for one of the leading producers of
subsequent vibrations should have no impact oncustom-molded rubber and rubber-to-metal bonded
Harford County's most recognizable natural feature -parts for noise and vibration control. The variety of
the 190-foot tall King and Queen Seat."fail-safe mounts with interlocking metal designs that
Residents and park enthusiasts have reason to beare included in the lineup can be used on static or
wary. The plan to "widen and shift Route 24 awaydynamic loads, and have a competitive selling price.
from the eroding Deer Creek stream bank throughThey are sold through distributors around the world.
Rocks State Park will involve dynamite blasting theOver the years, Vibro-Insulator mounts have been
famous geologic structures which give the popularawarded numerous patents for having these features.
park its name." Hence, the project could quicklyIn more recent years, many of the neoprene and
become an explosive one.natural rubber compounds used to make that
How does the State Highway Administration plan toaward-winning technology have been reformulated to
allay their fears? "SHA will provide the contractorimprove the tensile strength of the various elastomers
blasting provision as a guide to efficient blast designand the overall rubber-to-metal bond of the product
and vibration control," reports Harford County News'sline. There were also design improvements made to
"The Dagger."increase the strength of the metal hardware used in
The administration considered a variety of options forthe Vibro-Insulators.
the improvement project, and while dynamiteThe end result is a series of vibration control mounts
detonation was not its first choice, "it was deemed thethat can handle even the most explosive blasts.
least intrusive to the environment of the availableAvailable in a variety of styles and sizes to handle
options." As strange as this assertion may sound, if themost vibration isolation problems, the Vibro-Insulator line
right vibration control initiatives are put in place, it mayshould have no trouble standing up to the test of the
very well hold true.Route 24 dynamite detonations.
A consultation with a producer of custom-moldedWhen selecting the proper Vibro-Insulator, the State
rubber and rubber-to-metal bonded parts for noise andHighway Administration need only keep these
vibration control may be just the proof the Stateconsiderations in mind.
Highway Administration needs for its claim to hold
weight with the Harford County public. And if the1. The maximum load that must be supported.
detonation equipment the project uses is equipped with2. The number of mounts supporting the load.
the Vibro-Insulator line of vibration controls, the3. The frequency of the disturbing vibration.
administration has nothing to worry about.4. Any restrictions on the size or style of the mount
The Vibro-Insulator line of noise, shock and vibrationbased on space limitations or assembly considerations.
controls is a concept that is nearly four decades in the