| 【文章摘要】 Project Cornerstone was formed in April 2014 to serve as a bridge between the community and the industry it knows little about. The San Diego-based organization aims to educate people about the importance of aggregates, and its main goals are to connect with students, adults and teachers - and to focus on the importance of locally sourced materials. The so-called "extenders" tax law that passed late in 2014 did extend the first-year write-off for so-called Section 179 expenses and bonus depreciation, but only for the 2014 tax year. |