Last year, Swiss Re developed the industry's first exposure-based, global probabilistic volcano model that focuses on property loss from volcanic eruptions and ash flow. The model assesses the risks of more than 500 active global volcanoes based on hazard, vulnerability, value distribution and insurance conditions.

Characterised by warm and vibrant colours and evidence of intense ash flow within the kiln, Johnston's work ranges from large jars that feel as if they have just been unearthed to artisan sushi platters that feel right at home in the 21st century.

The vibration feeders are motor operated and equipped with frequency controller to adjust the bottom ash flow required for dense slurry mixing and discharge.

The Oligocene to early Miocene-age rhyolitic ash flow tuffs which host the gold ore apparently originated from a number of eruptive centers in the Toquima and Toiyabe Ranges (Boden, 1986).

However, the succession of volcaniclastic strata as published by these authors is not easily recognised in the field and the present writers distinguish a larger number of eruptions as represented by several pyroclastic intervals and ash fall deposits, followed by ash flow beds in the higher part.

Paipa volcano products are mainly pyroclastic pumice and ash flow tuffs, lava domes and pyroclastic block and ash flow tuffs.

Focus your conversation on how the numbers affect the bottom line (profit) and/or ash flow when presenting to management.

NASA's rovers Spirit and Opportunity found plenty of evidence of volcanic rocks and even ash--the layers Spirit found at the Columbia Hills resemble ash fall or ash flow deposits.

The Government said it was continuing to monitor the ash flow. Birmingham Airport said it was on round-the-clock standby monitoring the ash cloud.