Sand and gravel shipments from the tvvo princapal Janesville pits have increased during the past week with the return of warmer weather it was announced Sattir-. day The Atlas pit was reopened recently while the Janesville Sand and Gravel Co., open all winter, has gone into full swing. According to J* M. Brown, Milwaukee road passenger and freight agent, all indications point to heavy movements of sand and gravel this season*