American Lime Technology aims to launch Hemcrete, a building material made from lime and hemp, in North America over 1-3 years. Its objectives in year one include supplying materials for 100 homes, establishing a North American hemp supply chain, conducting product testing, and developing educational programs. In three years, it aims to secure regional distributors, complete product certification, and have annual projects of 1,000 units. Key elements for success include developing local hemp sourcing and trained installers, while obstacles could include hemp regulations and varying building codes.