[herdrick]

  - Cement is extremely perishable. 
  - Contruction projects need cement at very precise times.
  - When that precise time will occur is hard to predict -- construction projects have a lot of delays. 
  - In a city there are a lot of construction projects at any given time.

So using software to coordinate cement mixing and delivery has a lot of potential to reduce waste -- or that is, it did back in the dot-com boom when CEMEX started working on that. If you heard about that back then, you were hearing about something with a lot of promise! From what I remember it worked out really well.