Monetary Metal / Coinage, Bars

Batteries
Bearings
Brazing / Soldering
Catalysts
Cloud Seeding
Electronics / Electrical
Explosives
Jewelry
Medicine / Medical Applications
Mirrors / Reflective  Coatings
Musical Instruments
Photography
RFID (Radio Frequency Identification Devices)
Silverware
Solar Energy
Superconductivity
Water Purification
Wood Preservative

The use of silver as a wood preservative is a new application that is being slowly introduced into industry as licensing and product development issues are addressed. It is a relatively new usage that has yet to make a meaningful impact on the market as a source of demand, but some projections show the potential of wood preservatives as a measurable use of silver to be significant once this application becomes more widespread in the coming years.

For further reading about silver usage...

Silver Use
Silver Strategies

Silver Use
The Silver Institute