Jan 20 (Reuters) - Tongaat Hulett Ltd :: *JSE: TON - ANNOUNCEMENT RELATING TO THE SALE AGREEMENT (BOTSWANA) IN TERMS OF THE ADOPTED AND APPROVED BUSINESS RESCUE PLAN *TONGAAT HULETT LTD - THL TO SELL 33.3% OF ISSUED SHARE CAPITAL IN TH BOTSWANA *TONGAAT HULETT LTD - SALE TO BALL FOUNDRY HOLDINGS LIMITED, A NOMINEE COMPANY OF VISION PARTIES *TONGAAT HULETT LTD - VISION INVESTMENTS TO ACQUIRE 50.1% OF TH BOTSWANA