What: Dozer Day, a fairlike event where kids get to ride and drive heavy construction equipment, play in a pipe tunnel and dig for diamonds.Where: Cemex/Fisher Quarry, on the west side of Northeast 192nd Avenue and Brady Road intersection. Visitors are encouraged to take C-Tran from the Northeast 164th Street Park & Ride to the event. The bus costs $2, and riders will get a free souvenir.When: 11 a.m. to 4 p.m. Saturday and Sunday .Cost: At the gate, $8 for children ages 2-12 and seniors age 55 and older, $10 for adults, and free for kids under 2. Most events are free with admission. Bring cash for food and drink. No ATM on site.Information: Nutter FoundationRanee Nutter relies on some expert help as she plans the kids construction playground that is Dozer Day.Each year, her two children — Jerry, 16, and Sammi, 13 — help her create new attractions at the two-day event, she said.“They come to me all the time with great ideas,” Nutter said. “They thought of the scavenger hunt. Who better to plan a big kid’s party than a kid?” Dozer Day, in its ninth year, draws about 20,000 people over the weekend. About 900 volunteers and a host of local companies take kids on dump truck rides, show them how to run equipment and build pipe tunnel playgrounds for them.