For $5.2 million

Mid America Brick and Structural Clay Products (MAB) in Mexico has been purchased for $5.2 million by Shamrock Proppants, a Kirkwood-based manufacturer that intends to develop at the site a cargo ceramic proppants — materials used in oil and gas drilling, at the facility, which is very robust now, according to the St. Louis-based R.L Hulett Company handling the negotiations of the MAB sale. For more information, see Friday's edition of The Mexico Ledger.