And in the chamber, the respiration and the metabolic properties of the surface sand material were measured and we added nutrients and measured the gases that were produced.
The mine was shut down by the U.S. Mine Safety and Health Administration due to the unsafe buildup of sand and concrete material in the main shaft of the mine.
FORBES: Hecla's Lucky Friday Mine Rehabilitation Slightly Ahead Of Schedule, Restart In Early 2013
No production from the mine is expected this year after the federal Mine Safety and Health Administration ordered the Silver Shaft to be closed for removal of built-up sand and concrete material.
FORBES: Hecla Officials Anticipate Clean-Up Of Mine Shaft Can Begin In Few Weeks
The temporary closure of the Silver Shaft at the Lucky Friday mine was ordered last year by the federal Mine Safety and Health Administration for removal of built-up sand and concrete material.
FORBES: Update:Hecla Plans To Reopen Lucky Friday Mine In 1Q; Loss Reported In 3Q
Carbo Ceramics is a leader in making what's called ceramic proppant, which is the synthetic material, sand-based often, with chemicals that are injected into the fractured rock to hold open the cavities so the natural gas goes up into the piping that captures it.
Bar: fully or partially submerged mound of sand, gravel or other unconsolidated material built on the sea-bottom in shallow water by waves and currents.
Described as a "mega-scale free form printer" by its makers, the massive aluminum structure uses sand, which it forms back into a material that's like marble.
Using that information, her imagination, and powdery material she described as similar to sand and glue, she constructs a face and brings it into being with a three-dimensional printer.
Professor John Zarnecki, principal investigator on Huygens' surface science package (SSP) said the area where Huygens landed appeared to have a thin crust that overlies a material with more uniform consistency something like wet sand.
BBC: NEWS | Science/Nature | Titan mission 'resounding success'
Dredging: excavation, digging, scraping, draglining, suction dredging to emove sand, silt, rock or other underwater sea-bottom material.
According to his company's website, Mr Dini's industrial sized 3D printer uses sand and a special binding agent to create a "marble like material" stronger than cement.
The sand will be severely shaken and sieved to make sure only fine-grained material, less than the width of a human hair in diameter, reaches the instruments.
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