IGS has a range of bulk disturbed samplers that
can sample almost everything from gravels through to semi-liquid tailings and
sediments. Many of these samplers have been enhanced or completely developed by
Our Little Sucker and Big Sucker Samplers were originally designed to reliably take disturbed but un-mixed samples of very soft tailings materials. They are also well suited for sampling of very soft and extremely loose natural soils.
The principles are simple, as shown in the above Little Sucker cartoon.
To date, in materials suited to sampling by
this method, we have routinely achieved 100% sample recovery.
Samples taken this way can be subjected to
assay, chemical tests or various geomechanical classification tests such as
particle size, PI, moisture content, etc.
Note that the “Big Sucker” is simply a two-storey
version of the little sucker. Big Sucker can take two samples at the same time,
1m apart vertically.
IGS’s vibracore system is not the biggest or fastest available. However, it provides very high recovery %, and samples are taken with nil or close-to-nil contact with air.
are ejected into 600mm long plastic bags.
sampler can be used with any of our rigs, but it is particularly suited to
“Minnie”, “Mudskipper”, “Mad Mack” and the “Punt Rig”.
tube lengths of 1.8m and 3m are available, and in very soft materials depths
can sometimes be doubled up because of the closed piston shown in Step (1)
above; ie using the 3m tube 6m sampling can be achievable.
extremely robust devices can be used to:
design, IGS has 85mm and 95mm diameter.
insert these samplers by either hammering (the traditional method) or by push
method using the thrust of our in situ testing rigs. Hammering usually produces best results.
“invented and developed” our BS Sampler – so-named because the first time we
used it our guys said words to the effect:
that’s BS, how could that simple gadget work so well?”.
found an excuse for the name – “Bulk Sediment” sampler – because by coincidence
that is its function, to take bulk samples of sediments.
sampler air-lifts fluid and semi-fluid sediments to the surface from a discrete
the sediment can flow, then quite large bulk samples can be taken.
samples are “pure” to the extent that they are not diluted with water and they
are not mixed with material from any other depth range.
sampler has just one moving part and operates on relatively low pressure and
very low flow of air.
ideal for bulk sampling of very low strength tailings materials.
Keep up to date with our latest news and developments.