Chelsea Milling: 90-minute tour of packaging plant for Jiffy baking mixes. Free, reservations

Chelsea Milling: 90-minute tour of packaging plant for Jiffy baking mixes. Free, reservations required. 201 W. North Street, Chelsea, Mich. (734) 475-1361 or www.jiffymix.com.
Lionel Trains: Visitors center has history, video of train production, large train boards with 10 trains for visitor play. The 45-minute tour is free; reservations required. 26750 23 Mile Road, Chesterfield Twp., Mich. (586) 949-4100 or www.lionel.com.
Dow Chemical: Sorry, this popular public tour was suspended in September 2001. Lobby is open as a visitors center. 47 Building, Midland, Mich.
Hoegh Pet Casket Co.: 20-minute tours of production facilities and showroom where pet caskets are made. Free. 311 Delta, Gladstone, Mich. (906) 428-2151 or www.hoeghpetcaskets.com.
Simplicity Pattern Factory: Tours of production lines and paper mill at the historic sewing-pattern factory. Free, reservations required. 901 Wayne St., Niles, Mich. (269) 687-1565.
DeKlomp Wooden Shoe & amp; Delft Factory: Tour of the only blue and white Delft china factory in the United States, plus wooden shoe production and tulip gardens. 12755 Quincy, Holland, Mich. (616) 399-1900 or www.veldeer.com/tours.asp.
General Motors Lansing Car Assembly: Sorry, public tours have been suspended indefinitely. For updates, call (517) 885-9224.
Ford Rouge Plant: Will restart public tours in May. Behind-the-scenes assembly of the F-150 pickup, videos, plus factory's environmentally correct grass roof at the Dearborn plant. Tours conducted by The Henry Ford museum. 20900 Oakwood Blvd., Dearborn, Mich. (313) 982-6001 or www.hfmgv.org/rouge/default.asp.
Kellogg's Cereal City: Visitors center is a favorite of children and families. Hands-on exhibits, theme attractions, mock production line, collectibles. 171 W. Michigan Ave., Battle Creek, Mich. (800) 970-7020 or www.kelloggscerealcity.com.
Morley Candy: See the largest chocolate manufacturer in Michigan. 23770 Hall Rd., Clinton Twp, Mich. (800) 682-2760 or www.morleycandy.com.
Eli's Cheesecake World: Behind-the-scenes production-line tour of cheesecake factory; includes free cheesecake. 6701 Forest Preserve Dr., Chicago, Ill. (773) 205-3800 or www.elicheesecake.com.
American Whistle: Production-line tour of the only factory manufacturing metal whistles in the United States. 6540 Huntley Road, Columbus, Ohio. (877) 876-2380 or www.americanwhistle.com.
Honda Motorcycles: Production-line tour of Gold Wing and other motorcycles. 24000 Honda Parkway, Marysville, Ohio. (888) 291-8687 or ohio.honda.com/manufacturing/-tours/index.asp.
Hall China Co.: Tour of commercial china factory production line. 1 Anna St., East Liverpool, Ohio. Free. (330) 385-2900.
Kitchen Aid: Tour the mixer plant. 1701 Kitchen Aid Way, Greenville, Ohio. (888) 886-8318.
Louisville Slugger: Family favorite. See baseball bats made during a 90-minute tour at the Hillerich & amp; Bradsby Co. factory. 800 W. Main, Louisville, Ky. (502) 588-7228 or www.sluggermuseum.org.
Toyota Motor Manufacturing: Production tours of the plant that makes the Camry and other vehicles. Georgetown, Ky. Free, reservations required. (502) 868-3027 or www.toyotageorgetown.com.
Bowling Green GM Assembly: Tour of Corvette production line, including final assembly. Bowling Green, Ky. Free, reservations required. (270) 745-8419 or www.bowlinggreenassemblyplant.com.
Jelly Belly Distribution Center: 30-minute tram tours of distribution center include videos of production and free samples. 10100 Jelly Belly Lane, Pleasant Prairie, Wis. (866) 868-7522.
Koehler Co.: Factory tour of plumbing product production, including bathtubs, sinks, faucets, etc. 444 Highland Dr., Koehler, Wis. Reservations required. (920) 457-3699.
Janesville GM Assembly: One-hour tour of SUV production line, via tram. 1000 GM Drive, Janesville, Wis. Free, reservations required. (608) 756-7681 or www.janesvillecvb.com/gm.html.
Kokomo Glass: Tour of opalescent- and stained-glass factory, Kokomo, Ind. Free, reservations required. (765) 457-1829 or www.kog.com.
Jayco RV: Production-line tour of RVs, with visitors center. One of many RV factories in northern Indiana. 58075 State Rd. 13, Middlebury, Ind. (219) 825-5861 or www.jayco.com.