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Dual 2

Dual 2" Hitch Rise Drop Receiver Extender Extension 4000 LB Tow


Dual 2" Hitch Rise Drop Receiver Extender Extension 4000 LB Tow


Item specifics

Hitch Extender
Manufacturer Part Number:
Does Not Apply
Trailer Hitch Type:
Receiver Hitch
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Dual 2" Hitch Rise Drop Receiver Extender Extension 4000 LB Tow

General Geology
Geologic Hazards
Oil and Gas
Plate Tectonics
Satellite Images
Teacher Resources
U.S. Maps
World Maps
World Records

Where Is Ukraine?

Ukraine is an independent state in eastern Europe that shares a border with Russia to its east.
Ant Hill Garnets

Ant Hill Garnets - tiny gems that ants haul to the surface and discard on their anthill. Honest!
Fee Mining

Dig for Gems at dozens of sites across the United States. Keep what you find at most locations.
Crystal Habit

Crystal Habit is the external shape displayed by a crystal or an aggregate of crystals.

Peridotite is a chromite host rock, a source of diamonds and a possible carbon dioxide sink.
Sand Photo Collection

New Skylark Lutron CTCL-153P-WH Single Pole 3 Way Dimmable CFL/L . A photo gallery showing the diversity of the material we call "sand".

Diamond Misconception - Many people think that diamonds form from coal. Not True!

Labradorite is a feldspar mineral that sometimes exhibits an iridescent play-of-color.

Hematite - The most important ore of iron. A source of mineral pigment since prehistory.
Bear Map

NEW PAIR Energy Corse M8 D17 KF Kart Steering Stub Axles Spindle - Where you might encounter different types of bears.
What Is The Moho?
Crank Shaft Bearing Kit For Polaris ATV 500 Pro 2002
What Is The Moho? The Mohorovicic Discontinuity is the mantle/crust boundary.
Colored Diamonds

Colored Diamonds are diamonds with a noticeable body color. They can sell for over $1M/carat.

Rocks - Galleries of igneous, sedimentary and metamorphic rock photos with descriptions.
Strawberry Quartz

Strawberry Quartz is a red to pink quartz with inclusions that look like strawberry seeds.
Great Lakes

Great Lakes : Map of the Great Lakes with surrounding states and provinces.

Minerals - Descriptions, photos, articles, properties and uses for common minerals.
Types of Maps

Types of Maps - Explore some of the most popular types of maps that have been made.
Lightning Strikes Map

Lightning Strikes Map by NASA shows the worldwide distribution of lightning activity.

Obsidian - the volcanic rock that cools so quickly that it becomes a natural glass.
Expansive Soil
2001 Lanard Spider Monkey Wildlife Figure Safari Figurine Rare
Expansive Soil causes more damage than floods, hurricanes & tornadoes combined.
Wall Maps

Baseball Bat Weight 16oz Fits all regulation bats Donut - Wall maps of the world, continents, states and the USA.

Birthstones are gems assigned to the month of a person*s birth. They are popular gifts in the U.S.
Great Rift Valley

John Lennon Licensed Womens M Long Sleeve T Shirt Tea 2010 by Y - The extensive fault system that is tearing Africa apart.

Shale - The rock that has quickly transformed the oil and gas industry.
What is a Geyser?

What is a Geyser? Photos and information about geysers in many parts of the world.
Google Earth - Free

Free Google Earth software allows you to browse seamless world satellite images. Free.
Rock and Mineral Kits

Rock & Mineral Kits The best way to learn about rocks and minerals is with specimens!
Hardness Picks

Hardness Picks - Test for hardness with precise and easy-to-use hardness picks.

Geodes look like ordinary rocks on the outside but can be spectacular inside!
Plate Tectonics

Plate Tectonics - Articles and maps about plate tectonics and the interior of Earth.
100+ Gemstones

100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.

Troglobites are creatures that have adapted to a permanent life in the darkness of a cave.
Rock Art

Rock Art - People have been marking on rocks for thousands of years.
The Brewery Rock ?

The Rock Used to Make Beer - Geologists are beer experts and should know about this rock.
What is a Maar?

What is a Maar? The second most common volcanic landscape feature on Earth.

Granite - The intrusive igneous rock that underlies continents and countertops.

Tourmaline - an extremely colorful mineral and gem material.
Gem Silica

Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony.
Fool*s Gold

Fool*s Gold is a name used for pyrite when its brassy color fools people looking for gold.
Fluorescent Minerals

Fluorescent Minerals and rocks glow with spectacular colors under ultraviolet light.
Ethiopian Opal

Ethiopian Opal - The new opal heavyweight that might give Australia a run.

Pictures of Opal - A collection of different types of opal from all around the world and Mars too!
Tallest Mountain

Tallest Mountain - Everest has rivals in tallness, altitude and distance to the center of Earth.
Mineral Rights

Mineral Rights - Who owns the minerals under your land? Who wants to buy them?
What is LNG?

What is LNG? Liquefied Natural Gas. The gas is condensed into a liquid for efficient transport.
Types Of Eruptions

Types of Volcanic Eruptions - A description of the most common eruption types.
The British Isles

Names Used for Great Britain, British Isles, United Kingdom, and Ireland. What they mean.
UV Mineral Lamp

Portable UV Lamp - Short and long wave UV for fluorescent mineral viewing.
Petrified Wood

Petrified Wood is a fossil that forms when silica replaces and infills the cavities of wood.

Zircon is the primary ore of zirconium and a gemstone that is available in many colors.
Geology Books

Geology Books - A variety of books for reference, field trips, reading and more.

Chalcopyrite - The most important ore of copper for over five thousand years.
Largest Earthquake

Largest Earthquake ever recorded - Magnitude 9.5. Chile, 1960.

Diamonds - Learn about the properties of diamond, its many uses, and diamond discoveries.
Herkimer Diamonds

Herkimer Diamonds Doubly-terminated quartz crystals used as specimens and gems.

Azurite - Used as an ore of copper, a pigment, ornamental stone and gem material.

Nike Boy's Logo Breaker 8" Volley Shorts (Little Kids/Big Kids) - A bluish-green gem material that has been used for over 6000 years.
Curling Stones

Curling Stones are made from a special type of granite, found at just a few locations worldwide.

Olivine - Abundant in Earth*s mantle. A constituent of meteorites. The gem peridot.
US Diamond Mines

US Diamond Mines - Did you know that diamonds have been mined in the United States?
Largest Diamonds

World*s Largest Diamonds Records for the largest rough, faceted and carbonado diamond.
Lapis Lazuli

Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.

Quartzite is metamorphic rock formed when sandstone is subjected to heat and pressure.

Gemstones - Colorful images and articles about diamonds and colored stones.
Green River Fossils

The Green River Formation is one of the most famous rock units in the world for its fossils.

Rhyolite An extrusive igneous rock with a high silica content, produced from granitic magma.

Meteorites - Rocks that were once parts of planets or large asteroids.
What Is Earth Science?

What Is Earth Science? The study of Earth and its neighbors in space. Learn more!
The Acid Test

The Acid Test - Geologists use dilute hydrochloric acid to identify carbonate minerals.
Sliding Rocks

Sliding Rocks Mystery - What causes these rocks to slide across a playa in Death Valley?
Grape Agate

Grape Agate is a popular mineral specimen with the color and the shape of a bunch of grapes.
Volcanic Explosivity

Volcanic Explosivity - Rating volcanic eruptions based upon the volume of tephra ejected.
Crater of Diamonds

Crater of Diamonds - The only diamond mine in the world where you can be the miner.
Record Lightning

World Record Lightning - this lake has more lightning than any other place in the world.
Tallest Waterfall

Angel Falls in Venezuela is the tallest waterfall in the world - it is 3212 feet tall.

Emerald is the most popular green gemstone in the United States and most of the world.

Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.

Soapstone is a metamorphic rock with properties that make it suitable for a variety of projects.
Tallest Tsunami

Tallest Tsunami - A wave with a run-up height of 1720 feet occurred in Lituya Bay, Alaska.
Gifts That Rock

Gifts That Rock - What are the most popular gift items in the store?
Bear Attacks

Bear Attacks - Knowing how to react to a bear encounter or attack could save your life.

Rhodochrosite - a manganese mineral used as an ore, a pink gem and an ornamental stone.
What is Geology?

What is Geology? The study of Earth materials, structures, processes and life over time.
Storm Surge

Storm Surge can be the most damaging and deadly aspect of a hurricane.

10 Gemmy Facts About Spinel - Is spinel the world*s most overlooked gem?
Teacher Resources

Teacher Resources - K-12 resources for teaching about earth science.
Hawaiian Hot Spot

How did the Hawaiian Islands Form? The power of a moving plate over a stationary hot spot.
American Gemstones

Mined in America - Small mines in the United States produce a diversity of beautiful gemstones.
San Andreas Fault

What is the San Andreas Fault? Map, photos and description of the fault.
E.T. Volcanoes

Solar System Volcanoes - Earth is not the only location of volcanic activity.

Charoite is a purple silicate mineral, found only in Russia, used as a gem material.

Morganite is an orange to pink gemstone, a variety of beryl, that is growing rapidly in popularity.
Crushed Stone

The Unsung Mineral Hero - and the commodity upon which almost everything is built.
Geology Tools

Geology Tools - Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.

Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.

Andalusite is a metamorphic mineral and a strongly pleochroic gem material.
Underwater Volcano

Hawaii*s Next Island could be growing in the Pacific Ocean right now. Its name is Lo*ihi.
Cave of the Hands

Cave of the Hands is a cave where ancient people painted hands about 9000 years ago.
Rock Salt

Rock Salt is a sedimentary rock composed of the mineral halite. It has many uses!

Copper is a metal used in coins, electronics, pipes, wiring, motors, alloys and many other products.
Blue Flames

Blue Flames and the largest highly acidic lake in the world at Kawah Ijen Volcano.
Don*t Go To Jail

Know the Rules before removing rocks, fossils or minerals from public or private property.

Volcanoes - Articles about volcanoes, volcanic hazards and eruptions past and present.
DeLorme Atlas

Topo Maps - The DeLorme Atlas is an entire state of topo maps in one convenient book.
Field Courses

Field Courses - Over 80 field courses for undergraduate geology students.
Largest Volcanoes

Largest Volcano - That title is shared by Tamu Massif, Mauna Kea and Ojos del Salado.
Fire Opal

Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.

Ilmenite - The primary ore of titanium and source of most titanium dioxide.
Rock Tumblers

Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler.
Gems from Space

Extraterrestrial Gems - A number of materials from space are used as attractive gems.
Ruby and Sapphire

Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.
Rare Earth Elements

Rare Earths - Special materials used in electronics, defense, medical & many other products.
Fireworks & Minerals

The Science of Fireworks Learn how the colors and shapes are created.
Cinder Cones

Cinder Cones are the smallest, simplest, and most common type of volcano.
Mineral Luster

What Is Luster? Luster is the light-reflecting characteristics of a mineral specimen.
Spatter Cones

Spatter Cones are small, steep, volcanic cones built of welded basaltic lava.
Homeowners Insurance

Homeowners Insurance might not cover earthquake, hurricane and other geohazard damage.
Hand Lens

Hand Lens A 10-power folding magnifier in a metal case. A frequently used lab and field tool.
June 6th 1912

Novarupta - The most powerful volcanic eruption of the 20th century occurred in the U.S.A.
Earthquake Maps

California Earthquake Maps - A collection of isoseismal maps for earthquakes in California.

Helium is a byproduct of the natural gas industry. Its most important use is in MRI.
Rocks on Mars
Vintage NATIONAL LAMPOON 1977 Promotional Vinyl Bumper Sticker u
Rocks on Mars Many of the rocks found on Mars are not very different from Earth rocks.
Map of the Oceans

Map of the Oceans - showing the Atlantic, Pacific, Indian, Arctic, and Southern Oceans.

Citrine is the transparent variety of quartz with a yellow to orange to reddish color.
Largest Hurricanes

Largest Hurricanes Are they determined by wind speed, value of damage, most deaths?
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Greatest Ocean Depth

Deepest Point in the Ocean The deepest point in the ocean is in the Mariana Trench.
Uses of Marble

The Uses of Marble are numerous and diverse. You will be surprised by how it is used.
Mount Etna

Mount Etna - The most active volcano in Europe continues an eruption that started in 2001.
Waterproof Paper

DISH NETWORK DPP DISH PRO PLUS LNB LNBF 82 91 FTA & DP SEPARATOR - Don't take chances with your field notes and maps. Use waterproof paper.

Cinnabar - the only important ore of mercury. Used in pigments until its toxicity was realized.
Gold Pans

Gold Pans and Panning Kits - classifiers, snuffer bottles. Learn how to pan for Gold.
Mineral Hardness

Mohs Hardness Scale is a set of reference minerals used for classroom hardness testing.
Mars Meteorites

Mars Meteorites Mars rovers have found dozens of meteorites while exploring the red planet.

Chalk is a variety of limestone formed from fine-grained marine sediment known as ooze.

Coquina - A porous limestone composed almost entirely of fossil debris.
Uses of Gold

The Many Uses of Gold - Unique properties make gold one of the most useful metals.
Debris Flows

Debris Flows are moving masses of loose mud, sand, soil, rock and water.
Coal Close Up

Coal Through a Microscope - Coal is more than a black rock. It is THE most interesting rock.
Watch out for Ticks!

Ticks are a problem for geologists in some areas. Learn to recognize and avoid them.

Mineraloids are amorphous naturally-occurring inorganic solids that lack crystallinity.
Uses of Talc

Talc is a soft mineral used in cosmetics, paper, paint, ceramics and many other products.
Utica Shale

Utica Shale is a major source of oil, natural gas and natural gas liquids in PA, OH and WV.
Mount Vesuvius
Salt Sense 2 PACK Iodized REAL Salt 33% Less Low Sodium per teas
Mount Vesuvius - geology, history, maps, facts and more about the Vesuvius eruptions.
Canary Islands

Where Are the Canary Islands? Off the northwest coast of Africa, 60 miles west of Morocco.
Hurricane Names

How Are Hurricanes Named? There is a plan for naming tropical storms.
Darvaza Gas Crater

The Doorway to Hell is a flaming sinkhole seeping natural gas that has been burning for decades.