Alluvial Experience
Alluvial mineral deposits present a unique range of problems to the exploration geologist and mining engineer, and specific expertise is required for their successful exploration, evaluation and development. A C A Howe International Limited has been involved in a wide range of alluvial projects for gold, diamonds and other heavy minerals in many parts of the world with widely differing climatic and geomorphological conditions and including present-day river systems, palaeochannels, terrace deposits, deep leads and beach sands. Some of the more significant projects include:

	Mapping, sampling and reserve estimation of an auriferous Tertiary channel in California
	Identification, Banka drilling, pitting and reserve estimation of a number of alluvial gold deposits in Kalimantan, Indonesia, including one deposit brought to production and another at feasibility
	Investigation of alluvial diamond and gold deposits in Guinea, Ghana and Sierra Leone
	Mapping, bulk sampling and reserve estimation of a deeply dissected fluvio-glacial gold deposit in Bolivia
	Production supervision of an alluvial diamond deposit in South Africa
	Mapping, pitting and bulk sampling of terrace alluvials for diamonds in Central African Republic
	Testing of working sand and gravel quarries for gold content in Scotland
	Geophysical surveys over volcanic-covered deep tin leads in Tasmania and New South Wales, Australia
	Pitting and sampling of beach sands in Western Australia
	Field and data evaluation of mineral sands project in European Russia
	Reserve estimation of alluvial diamond deposit in Guinea