The latter allows free drainage ( which is useful if the top is open ) but can lead to contamination of the sand with soil if the children dig down to the ground.

If the aquifer is confined by low-permeability layers, the reduced water pressure in the sand and gravel causes slow drainage of water from the adjoining confining layers.

Randolph Farms was built on a limestone hill, directly over sand and gravel aquifers, near the drainage basins of White River and Whitewater River.

* industrial site drainage ( silt, sand, alkali, oil, chemical residues );

Most species favor loamy soils, often among rocks where drainage is good, but some grow in marshes and others in pure sand.

The closely grazed turf and naturally good drainage of the links was ideal for golf, and areas of longer grass, heather, low growing bushes and exposed sand provided the hazards that are familiar on modern courses.

For example, the largest particles, sand, determine aeration and drainage characteristics, while the tiniest, sub-microscopic clay particles, are chemically active, binding with water and plant nutrients.

" Drift " geology is often more important than " solid " geology when considering building works, drainage, siting water boreholes, sand and gravel resources and soil fertility.

It is composed of a sandy soil formed after an esker deposited a sand load and as a result it has excellent drainage characteristics.

The Town of Wasaga Beach covers an area of comprised predominately of sand and loamy sand that exhibit excessive to good drainage and irregular to moderately sloping topography.

Randolph Farms was built on a limestone hill, directly over sand and gravel aquifers, near the drainage basins of White River and Whitewater River.

A coarse grade sand or grit can be used as a substitute for a drainage mechanism if needed.

For a plant that requires fast drainage, such as a cactus, use plenty of coarse sand, grit or perlite.

The sand is used in the production of concrete and asphalt, and also in drainage systems and beach nourishment.

It served both as a drainage channel and a navigation with goods being brought from the Londonderry Port, and shellfish and kelp from the sand banks along the shore.

The eastern coastline of Hinchinbrook Island is punctuated with headland outcrops, incised drainage conduits, forest, secluded sandy pocket beaches and sand dunes.

In 2007, the entire surface was resodded with Tifway bermudagrass, which rests on a 12-inch bed of sand to enhance drainage.

The construction of a sand barrier ( Drina ) in front of the drainage course of rain waters worsened the problems.

Geonets are synthetic drainage materials which are often used in lieu of sand and gravel.

Geonets can replace 12 inches of drainage sand, thus increasing the landfill space for waste.

The new outfield consists of ; 175mm of amended root-zone, 125mm of unamended root-zone sand, a 50mm blinding layer and a 100mm gravel drainage layer.

The Cricket pitch was reconstructed with four main pitches and a profile consisting of ; 200mm of clay, over 150mm of medium-fine sand along with a gravel drainage layer.

4 May 2009 < http :// www. up. ac. za / academic / botany / garden / species / 95. html ></ ref > For growth in a greenhouse Kalanchoe beharensis will grow in a mixture of equally distributed loam and sand, and gravel for drainage.

It provides a rich growing medium, or a porous, absorbent material that holds moisture and soluble minerals, providing the support and nutrients in which plants can flourish, although it is rarely used alone, being primarily mixed with soil, sand, grit, bark chips, vermiculite, perlite, or clay granules to produce loam.

In these stories a supreme being usually sends an animal into the primal waters to find bits of sand or mud with which to build habitable land.

:" All nature, from the smallest thing to the biggest, from a grain of sand to the sun, from the protista to man, is in a constant state of coming into being and going out of being, in a constant flux, in a ceaseless state of movement and change.

This property was used in incendiary weapons used in the firebombing of cities in World War II, the only practical civil defense being to smother a burning flare under dry sand to exclude the atmosphere.

To that end, nearly every building on campus is noticeably Byzantine in style, with sand and pink-colored bricks, large archways and columns being a common theme among many campus buildings.

Upon being collected from coastal waters, zircon-containing sand is purified by spiral concentrators to remove lighter materials, which are then placed back into the water safely, as they are all natural components of beach sand.

Over any significant period of time, sand is always being exchanged between them.

The city is being covered by the sand dunes advancing from its eastern side ( salmon-coloured on image to left ), which pose a daily problem.

Note that both sand and tarmac can become very hot when exposed to the sun, easily being more than 10 ° C hotter than the air one meter above, enough to cause the mirage.

Delayed by the Nadezhda hitting a sand bank – and then being beaten by a storm, such that it was forced to stay at Bolsheretsk – the two other ships arrived in their destination, Avacha Bay in south-eastern Kamchatka, on 6 October.

Similarly, he claimed that the anatase in the ink could have come from sand used to dry it ( the hypothetical source of the sand being gneiss from the Binnenthal area of Switzerland ) but his team had not examined the crystals microscopically, and Kenneth Towe responded that this was an essential test, given that crystal size and shape should clearly distinguish commercial anatase from anatase found in sand.

These are accumulations of sand, gravel, loam, silt, and / or clay, and are often important aquifers, the water drawn from them being pre-filtered compared to the water in the river.

In addition, great numbers of Harbour Seals and Grey Seals, the latters being rather uncommon in German seas, can be found on sand banks off Sylt.

By casting the projectile point downwards and forming the head in an iron mold, the hot metal was suddenly chilled and became intensely hard ( resistant to deformation ), while the remainder of the mold, being formed of sand, allowed the metal to cool slowly and the body of the shot to be made tough ( resistant to shattering ).

According to the protagonist's nurse, he threw sand in the eyes of children who wouldn't sleep, with the result of those eyes falling out and being collected by the Sandman, who then takes the eyes to his iron nest on the moon, and uses them to feed his children.

After 34 days of Iowa mud pits, sand drifts in Nevada and Utah, overheated radiators, flooded roads, cracked axles, and enthusiastic greetings in every town that thought it had a chance of being on the new highway, the tour arrived for a parade down San Francisco's Market Street before thousands of cheering residents.

By 1886, after the Alaska Purchase by the United States, the black sand beaches in the area were being mined for gold.

The formula being outlined in the sand symbolizes scientific abstraction.

Mulga scrub and mulla mulla are found in dense scrubland in the northeastern plains with spinifex and sand dunes being found in the western end.

Dyer is built on mostly flat land with an exception being the steep sand ridge south of US Highway 30.