The disaster office said efforts by Marcopper workers to seal the tunnel by pouring coarse gravel and cement through a hole proved futile.
12.
Large amounts of coarse gravel and boulders carried along underneath the glacier provide the abrasive power to cut trough-like " glacial grooves ".
13.
Fill the cavity around the liner with coarse gravel till the gravel comes about an inch above the underside of the basement floor.
14.
A : It sounds as though the sand bed is not deep enough, or that a suitable foundation of coarse gravel was not put down under the sand.
15.
Wolfram was discovered in 1894 in the headwaters of the Hodgkinson River scattered over the surface as bunches in quartzose boulders or in drifts interdispersed with coarse gravel.
16.
The upper sedimentary deposits grade from lake to river-dominated deposition, and include " Etheria " mussel reefs, sandstones, coarse gravels, occasional lake phases, and the formation of soils.
17.
In the base of each bed is a series of herringbone drains that are covered with a layer of pebbles which in turn is covered with coarse gravel.
18.
Aggregate consists of large chunks of material in a concrete mix, generally a coarse gravel or crushed rocks such as limestone, or granite, along with finer materials such as sand.
19.
Neurologist Vilayanur Ramachandran and his colleagues placed a flatfish in a tank with a variety of patterns on the bottom, including large polka dots, yellow beach sand and coarse gravel.
20.
Fears of major damage did not turn into reality when the dam was breached, though significant quantities of coarse gravel were deposited downstream and the river's path was changed in places.
