We wanted to mention our friends at Process Laboratories again today. According to their website, "Process Laboratories Corporation provides specialty technical services to pyroprocessing industries. Our considerable experience with rotary kilns world-wide enables us to effectively combine current research and modern instrumentation with the necessary expertise to optimize your rotary equipment's performance." Mike Ryan, President, is a real professional. And everytime I talk to Mike, he is at a client's site somewhere in the world--obviously his services are in high demand. Please check them out today. And, let Mike know you heard about his company on Nip Impressions. Thanks, Jim Answer to last week's riddle: 40 pennies, 2 dimes, 8 nickels; 45 pennies, 1 quarter, 2 dimes, 2 nickels. Last week's riddle asked: "List 2 ways to make change for a dollar with exactly 50 (common) U.S. coins." This week's riddle: When is it a prop? (There is no typo in this question)