This technical note focuses on heavy. metal soil contamination. Metals in Soil. Mining, manufacturing, and the use of synthetic products (e.g. pesticides, paints, batteries, industrial waste, and land application of industrial or domestic sludge) can result in heavy metal contamination of urban and agricultural soils.
As a beginner, try practicing the guitar for 10-15 minutes a day. As you begin to build your finger muscles and improve your playing, you can increase this amount of time as you see fit. You may feel comfortable practice for 30 minutes per day, an hour per day, or even more.
Hard work. Playing the electric guitar requires diligence in learning about the intricacies of lead lines, riffs, and licks. And the best electric guitar players I know spend an almost obsessive amount of time (over weeks, months, and years) researching equipment and dialing in the perfect tone.