There have been only four investigative JPCs so far.
The first was instituted to inquire into the Bofors contract on a motion moved by then defence minister K C Pant in the Lok Sabha on August 6, 1987. The Rajya Sabha endorsed it a week later. The committee, headed by B Shankaranand, held 50 sittings and gave its report on April 26, 1988. Opposition parties boycotted the committee on the ground that it was packed with Congress members. The JPC report was tabled in Parliament, but it was rejected by the Opposition.
The second investigative JPC, headed by former Union minister and senior Congress leader Ram Niwas Mirdha, was set up to probe Irregularities in Securities and Banking Transactions in the aftermath of the Harshad Mehta scandal. The motion was moved by then minister for parliamentary affairs Ghulam Nabi Azad in the Lok Sabha on August 6, 1992. The Rajya Sabha concurred with it the next day. The recommendations of the JPC were neither accepted in full nor implemented.
The third investigative JPC was assigned to probe the market scam. Then parliamentary affairs minister Pramod Mahajan piloted a motion in the Lok Sabha on April 26, 2001, to put it in place. Senior BJP member Lt Gen Prakash Mani Tripathi (retd) was named the chairman. The committee held 105 sittings and gave its report on December 19, 2002. The committee recommended sweeping changes in stock market regulations. However, many of these recommendations were diluted later.
The last JPC was set up in August 2003 to look into pesticide residues in soft drinks, fruit juice and other beverages and to set safety standards. The committee, headed by NCP chief Sharad Pawar, held 17 sittings and submitted its report to Parliament on February 4, 2004. The report confirmed that soft drinks did have pesticide residues and recommended stringent norms for drinking water.
source:- msn