Announces Third Quarter Earnings Conference Call

NEW YORK, October 11, 2002--Minerals Technologies Inc. (NYSE:MTX) will sponsor a conference call on Friday October 18, 2002, at 11:00 a.m. Eastern Time to discuss third quarter 2002 financial results.

The company will release its financial results on October 17, 2002 and will host the conference call at 11 a.m. EST the following day. The call is open to the public but active participation will be limited to investors and analysts.

This call is being webcast by CCBN and can be accessed at Minerals Technologies Inc.'s web site at http://www.mineralstech.com. To listen to the call go to the MTI web site and click on Investor Relations and then click on Conference Calls.

The webcast is also being distributed over CCBN's Investor Distribution Network to both institutional and individual investors. Individual investors can listen to the call through CCBN's individual investor center at www.companyboardroom.com or by visiting any of the investor sites in CCBN's Individual Investor Network such as America Online's Personal Finance Channel, Fidelity Investments® (Fidelity.com) and others. Institutional investors can access the call via CCBN's password-protected event management site, StreetEvents (www.streetevents.com). StreetEvents allows institutional investors to identify, organize, and track the hundreds of conference calls that occur each day during earnings season, to download events of interest to their Outlook calendar, and to RSVP to events online.

Minerals Technologies Inc. is a global resource- and technology-based organization that develops and produces performance-enhancing minerals, mineral-based and synthetic mineral products for the paper, steel, polymer and other manufacturing industries. The company reported sales of $684.4 million in 2001.

Acquires Polar Minerals

NEW YORK, September 9, 2002--Minerals Technologies Inc. (NYSE:MTX) announced today that its wholly owned subsidiary, Barretts Minerals Inc. (BMI), has acquired the business and assets of Polar Minerals Inc., a privately owned producer of industrial minerals in the Midwest United States.

Polar Minerals operations will be incorporated into the company's Specialty Minerals Segment. The purchase price was $22.5 million.

Polar Minerals has mineral processing plants in Wellsville, Ohio, and Mount Vernon, Indiana. These two plants process high quality mineral ores into performance minerals for the plastics, paint, adhesives and sealants, rubber and cosmetics industries. Polar's products include talc, ground calcium carbonate, barytes and mica. Polar had sales in 2001 of $24.1 million. The Company expects the acquisition to be accretive in the first 12 months.

The Specialty Minerals segment, through its Processed Minerals product line, currently operates a talc plant in Montana and ground calcium carbonate plants in Massachusetts, Connecticut and California.

"Polar Minerals' plants and products complement our Processed Minerals product line, giving us a greater presence in the Midwest U.S., where a large portion of the American industrial base is located," said Paul R. Saueracker, chairman, president and chief executive officer of Minerals Technologies Inc. "This purchase is consistent with our strategy of expanding our business through selective acquisitions. We will bring our strengths in technology, research and technical service, and our world-wide sales presence to the Polar Minerals operations."

"This acquisition will provide us with a stronger, broader product line for the markets we serve," said Dennis R. Harrison, Vice President and Managing Director of Performance Minerals for SMI. "We look forward to having the new minerals, barytes and mica, to offer to our current customers. The purchase also provides access to outstanding mineral ore sources from outside the U.S."

Minerals Technologies Inc. is a resource- and technology-based organization that develops and produces performance enhancing mineral, mineral-based and synthetic mineral products for the paper, steel, polymer and other manufacturing industries on a world-wide basis. The company reported net sales of $684 million in 2001.

Declares Regular Quarterly Dividend

NEW YORK, July 25, 2002--Minerals Technologies Inc. (NYSE:MTX) today declared a regular quarterly dividend of $0.025 (two and one-half cents) a share on the company's common stock. The dividend is payable on September 18, 2002 to stockholders of record on September 6, 2002.

Minerals Technologies Inc. is a global resource- and technology-based organization that develops and produces performance-enhancing minerals, mineral-based and synthetic mineral products for the paper, steel, polymer and other manufacturing industries. The company reported sales of $684.4 million in 2001.

Reports Second Quarter Earnings

NEW YORK, July 18, 2002--Minerals Technologies Inc. (NYSE:MTX) today reported second quarter net income of $14.0 million, a 35-percent increase over the $10.3 million reported in the second quarter of 2001. Diluted earnings per common share were $0.67 compared with $0.52 in the same period last year, a 29-percent increase. In the second quarter of 2001, the company recorded a pre-tax restructuring charge of $3.4 million, or $0.10 in diluted earnings per share.

"Because of the strategies we have in place, Minerals Technologies grew sales by 9 percent despite weak economic conditions in the two main industries we serve--paper and steel--both of which have shown continued declines in production from a year ago," said Paul R. Saueracker, chairman, president and chief executive officer. "However, our operating income, excluding the prior year's restructuring charge, grew only 2 percent. This slower growth in operating income can be attributed to a few factors, including some spending undertaken to support the company's future growth. These factors included development costs for the recently acquired merchant plant in Hermalle, Belgium, which is now producing coating-grade precipitated calcium carbonate (PCC); marketing expenses for the launch of Scantrol(TM) , the new laser-sensor robotic maintenance system for electric arc steel furnaces; high start-up costs for installation of Minscan refractory application equipment; additional expenses for heavy trial activity for the patented Mag-O-Star(R) refractory spray coating technology; and severance costs related to organizational changes."

Worldwide sales were up 9 percent to $186.8 million from $170.7 million in the second quarter of last year. Operating income of $21.0 million was 22 percent higher than the $17.2 million reported for the second quarter of 2001. As noted, excluding the restructuring charge taken in the second quarter of 2001, operating income increased 2 percent.

For the first six months of 2002, net income increased 25 percent to $27.5 million compared with $22.0 million last year. Diluted earnings per common share increased 21 percent to $1.33 compared with $1.10 for the first six months of 2001.

Worldwide sales for the first six months of 2002 increased 9 percent to $365.8 million from $334.7 million reported last year. The unfavorable impact of foreign exchange on sales for the first six months of 2002 was approximately $1.9 million. Operating income for the first six months of 2002 was $42.4 million, a 16-percent increase over the $36.7 million reported in the first half of 2001. Excluding the prior year's restructuring charge, operating income increased 6 percent.

Sales in the Specialty Minerals segment, which includes the PCC and Processed Minerals product lines, increased 6 percent to $127.7 million from $120.6 million in the comparable quarter of 2001. Excluding the prior year's restructuring charge, income from operations for the second quarter increased 5 percent to $15.6 million from $14.8 million in the prior year. For the first six months of 2002, Specialty Minerals sales increased 4 percent to $252.0 million from $241.3 million in the same period in 2001. Excluding the prior year's restructuring, income from operations for the six months increased 7 percent, from $28.7 million in 2001 to $30.8 million this year.

Worldwide sales of PCC, which is used primarily in the manufacturing processes of the paper industry, increased 6 percent to $103.3 million compared with $97.6 million in the second quarter of 2001. For the six months, PCC sales increased 5 percent, to $206.2 million compared with $197.3 million last year.

Sales of PCC used for filling and coating paper had a 7-percent growth in tonnage in the second quarter, largely due to the ramp-up of the 10 new units of PCC capacity that were added in 2001. One unit is roughly 30,000 tons of annual PCC capacity. Five of these additional units came from new satellite plants the company constructed at Great Northern Paper Company in Millinocket, Maine, and at a paper mill owned by M-Real Corporation at Alizay, France. The remaining five units came from expansions at existing satellite PCC plants.

"Despite the continued decline in the worldwide paper industry, Minerals Technologies' PCC business continued to grow," said Mr. Saueracker. "This growth came from the ramp-up of new and recently expanded facilities and the successful execution of our strategies, especially increased penetration of the groundwood market."

Sales of Specialty PCC, used in non-paper applications, continued to be weak as a result of poor industry conditions and a more competitive environment in the consumer market for calcium-fortified products.

Worldwide sales of Processed Minerals products increased 6 percent in the second quarter to $24.4 million from $23.0 million in the same period in 2001. For the six months, sales of Processed Minerals products increased 4 percent to $45.8 million from $44.0 million for the first half of 2001. These products are used in the building materials, steel, polymers, ceramics, paints and coatings, glass and other manufacturing industries.

"Much of the strength of our Processed Minerals business comes from the improved economic environment in the construction industry," said Mr. Saueracker.

Sales in the Refractories segment, the products of which are used primarily in the steel industry, increased 18 percent to $59.1 million in the second quarter from $50.1 million in the same period of 2001. However, operating income decreased 7 percent to $5.4 million from $5.8 million in the prior year, excluding the restructuring charge in 2001. This was attributable to the continued weakness in the steel industry, changing product mix and increased expenses in support of new product launches. For the six months of 2002, net sales of refractory products were $113.8 million, a 22-percent increase over the $93.4 million reported in the first half of 2001. Excluding the prior year's restructuring charge, income from operations for the six months increased 2 percent to $11.6 million from $11.4 million.

In a development unrelated to the second quarter results, International Paper (IP), Minerals Technologies' largest customer, has informed the company that it intends to begin negotiations with alternative suppliers at one satellite location at which the contract between IP and Specialty Minerals Inc., a wholly owned subsidiary of the company, has expired. The company continues to supply PCC at this location and expects to continue to do so through 2003. IP has also informed the company that it will honor all existing contracts, but is expected to negotiate with other suppliers at other satellite locations as the contracts for those locations expire over the next several years, with the last contract expiring in 2010. That decision by IP increases the risk that some or all of these contracts will not be renewed. However, the company believes its PCC product line continues to offer an attractive value proposition to the paper industry and intends to compete to renew these contracts as they expire. The loss of a substantial amount of the company's sales to IP would have a material effect on the company's results of operations and projected growth rate; however, because these contracts have various remaining terms, the full impact would not be felt for several years. In recognition of this increased risk, the company has shortened the periods over which existing satellite plants at IP mills are depreciated. The shortened depreciation schedule will reduce diluted earnings per share by approximately $0.04 per share for the second half of 2002 and about $0.08 per share in 2003.

"The sharp economic decline in the paper and steel industries that began in the fourth quarter of 2000 continues to have a negative effect on our financial performance," said Mr. Saueracker. "We do not, at this time, see the anticipated level of improvement that was forecast to occur during the second half of this year. Consequently, we now believe that our diluted earnings per share for 2002 will be between $2.78 and $2.83."

This press release contains some forward-looking statements. Actual results may differ materially from these expectations. The company undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events, or otherwise. Forward-looking statements in this document should be evaluated together with the many uncertainties that affect our businesses, particularly those mentioned in the cautionary statements of our 2001 Form 10-K and in our other reports filed with the Securities and Exchange Commission.

Announces Second Quarter Earnings Conference Call

NEW YORK, July 12, 2002--Minerals Technologies Inc. (NYSE:MTX) will sponsor a conference call on Friday July 19, 2002, at 11:00 a.m. Eastern Time to discuss second quarter 2002 financial results.

The company will release its financial results on July 18, 2002 and will host the conference call at 11 a.m. EST the following day. The call is open to the public but active participation will be limited to investors and analysts.

This call is being webcast by CCBN and can be accessed at Minerals Technologies Inc.'s web site at http://www.mineralstech.com. To listen to the call go to the MTI web site and click on Investor Relations and then click on Conference Calls.

The webcast is also being distributed over CCBN's Investor Distribution Network to both institutional and individual investors. Individual investors can listen to the call through CCBN's individual investor center at www.companyboardroom.com or by visiting any of the investor sites in CCBN's Individual Investor Network such as America Online's Personal Finance Channel, Fidelity Investments® (Fidelity.com) and others. Institutional investors can access the call via CCBN's password-protected event management site, StreetEvents (www.streetevents.com). StreetEvents allows institutional investors to identify, organize, and track the hundreds of conference calls that occur each day during earnings season, to download events of interest to their Outlook calendar, and to RSVP to events online.

Minerals Technologies Inc. is a global resource- and technology-based organization that develops and produces performance-enhancing minerals, mineral-based and synthetic mineral products for the paper, steel, polymer and other manufacturing industries. The company reported sales of $684.4 million in 2001.

Declares Regular Quarterly Dividend

NEW YORK, April 25, 2002--Minerals Technologies Inc. (NYSE:MTX) today declared a regular quarterly dividend of $0.025 (two and one-half cents) a share on the company's common stock. The dividend is payable on June 14, 2002 to stockholders of record on May 24, 2002.

Minerals Technologies Inc. is a global resource- and technology-based organization that develops and produces performance-enhancing minerals, mineral-based and synthetic mineral products for the paper, steel, polymer and other manufacturing industries. The company reported sales of $684.4million in 2001.

Reports First Quarter Net Income Growth

NEW YORK, April 18, 2002--Minerals Technologies Inc. (NYSE:MTX) today reported first quarter diluted earnings per common share of $0.66, a 14-percent increase from the $0.58 reported in the first quarter of 2001.

Worldwide sales were $179.0 million compared with $164.0 million in the first quarter of 2001, a 9-percent increase. Foreign exchange had a negative impact on sales of approximately $3.4 million, or 2 percentage points of growth. For the quarter, operating income was $21.4 million compared with $19.5 million for the same period last year, a 10-percent increase. The company's net income for the quarter was $13.5 million, a 16-percent increase from $11.7 million reported in the first quarter of 2001.

"We took important steps in 2001 that led directly to the improvement in our first quarter financial results," said Paul R. Saueracker, chairman, president and chief executive officer. "First, we made two opportune acquisitions in our refractories business. Second, we restructured our operations to reduce costs, improve efficiency and tightly control expenses throughout the business. We have not seen, however, any meaningful or sustained improvement in economic conditions in the industrial sectors we serve -- paper, steel, construction and automotive. Times are uncertain for the manufacturing sector. We believe that we have taken the necessary actions that allow this company to maintain focus, to remain competitive and to be poised for future growth."

Sales in the Specialty Minerals segment, which includes the precipitated calcium carbonate (PCC) and Processed Minerals product lines, increased 3 percent to $124.3 million from $120.7 million in the first quarter of 2001. Income from operations increased 9 percent to $15.2 million from $13.9 million in the same period last year.

Worldwide sales of PCC grew 3 percent to $102.9 million from $99.7 in the first quarter of 2001. The strong U.S. dollar had a negative effect of approximately $1.9 million on PCC sales, or 2 percentage points of growth. Sales of PCC used for filling and coating paper had a 5-percent growth in tonnage, largely due to the ramp-up of the 10 new units of precipitated calcium carbonate capacity that were added in 2001. One unit is roughly 30,000 tons of annual PCC capacity. Five of these additional units came from new satellite plants the company constructed at Great Northern Paper Company in Millinocket, Maine, and at a paper mill owned by M-Real Corporation at Alizay, France. The remaining five units came from expansions at existing satellite PCC plants.

In February, the company purchased a PCC manufacturing facility in Hermalle-sous-Huy, Belgium, from the J.M. Huber Corporation of Edison, N.J. The facility has the initial capacity to produce approximately 60,000 tons of PCC per year. The acquisition of this merchant PCC plant in Belgium allows the company to accelerate its European coating PCC program to take advantage of the market opportunity there.

In total, sales of Specialty PCC, used in non-paper applications, were essentially level with sales during the same period last year as a result of continued weak industry conditions and a competitive environment in the calcium supplement market. On the positive side, the company's Specialty PCC merchant plant in Brookhaven, Mississippi, which experienced a delayed start-up and longer-than-expected customer qualification programs, has begun to ramp up production. "We expect Brookhaven to make a positive contribution to the company as the year progresses," said Mr. Saueracker.

Worldwide sales of Processed Minerals products increased 2 percent in the first quarter to $21.4 million from $21.0 million in the same period in the prior year. Processed Minerals products, which include ground calcium carbonate and talc, are used in the building materials, steel, polymers, ceramics, paints and coatings, glass and other manufacturing industries.

Sales in the Refractories segment, used primarily in the steel industry, increased 26 percent to $54.7 million from $43.3 million during the first quarter of 2001. Income from operations increased 11 percent to $6.2 million from $5.6 million in the first quarter of 2001.

"Minerals Technologies made two strategic acquisitions that were the primary reason for the growth in the refractories segment," said Mr. Saueracker. "Last May, the company acquired the refractories business of Martin Marietta Magnesia Specialties Inc., and in September, we purchased Rijnstaal B.V., a Netherlands-based producer of cored metal wires used mainly in the steel and foundry industries. We are applying our technological expertise to transform the products and application systems that we acquired from commodity-type products and systems into higher margin specialty products and systems."

Mr. Saueracker concluded: "Because of the actions we have taken, Minerals Technologies improved year-over-year performance for the first quarter despite weak industry conditions. The business fundamentals of the company remain strong and we will continue to seize opportunities for growth. We remain hopeful that economic conditions in the manufacturing sector will improve during the year."

This press release contains some forward-looking statements; in particular statements of anticipated changes in the business environment in which the company operates and in the company's future operating rates. Actual results may differ materially from these expectations. The company undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events, or otherwise. Forward-looking statements in this document should be evaluated together with the many uncertainties that affect our businesses, particularly those mentioned in the cautionary statements of our 2001 Form 10-K and in our other reports filed with the Securities and Exchange Commission.

Announces First Quarter Earnings Conference Call

NEW YORK, April 12, 2002--Minerals Technologies Inc. (NYSE:MTX) will hold its quarterly conference call to discuss first quarter results on Friday, April 19, 2002, at 11:00 a.m. Eastern Time (10 a.m. Central Time).

This call is being webcast by CCBN and can be accessed at Minerals Technologie's web site at www.mineralstech.com.

The webcast is also being distributed over CCBN's Investor Distribution Network to both institutional and individual investors. Individual investors can listen to the call through CCBN's individual investor center at www.companyboardroom.com or by visiting any of the investor sites in CCBN's Individual Investor Network. Institutional investors can access the call via CCBN's password-protected event management site, StreetEvents (www.streetevents.com).

Minerals Technologies Inc. is a global resource- and technology-based organization that develops and produces performance-enhancing minerals, mineral-based and synthetic mineral products for the paper, steel, polymer and other manufacturing industries. The company reported sales of $684.4 million in 2001.

Acquires a Merchant PCC Facility in Belgium

NEW YORK, February 6, 2002--Minerals Technologies Inc. (NYSE:MTX - news) announced today that it has purchased from the J.M. Huber Corporation of Edison, N.J. a facility in Hermalle-sous-Huy, Belgium, that manufactures precipitated calcium carbonate (PCC).

The facility, which will be operated by Specialty Minerals Inc., a wholly owned subsidiary, has the capacity initially to produce approximately 60,000 tons of PCC per year. The purchase price was not disclosed.

``The acquisition of this merchant PCC plant in Belgium allows us to accelerate our European coating PCC program to take immediate advantage of the market opportunity there. We plan to modify the facility so that it is capable of producing our family of sophisticated Opacarb® PCC products. These products are now used in high-quality publication and graphic art papers,'' said Paul R. Saueracker, chairman, president and chief executive officer. ``Last May we announced that we would invest $27 million for the construction of a new 125,000 ton-per-year merchant facility in Germany for the production of coating grade PCC. This facility remains under construction and we expect it to be in operation in 2003. Both of these facilities are an integral part of our strategy to expand internationally and to penetrate the worldwide coated paper market where we see market demand for our coating grade PCC products.''

Precipitated calcium carbonate is a specialty pigment for filling and coating high-quality paper. By substituting PCC for more expensive wood fiber, and other, more expensive pigments, the paper industry is able to produce higher quality paper at lower cost. Minerals Technologies is the world's largest supplier of PCC to the global paper industry.

Minerals Technologies Inc. is a global resource- and technology-based organization that develops and produces performance-enhancing minerals, mineral-based and synthetic mineral products for the paper, steel, polymer and other manufacturing industries. The company reported sales of $684.4 million in 2001.

Declares Regular Quarterly Dividend

NEW YORK, January 24, 2002 -- Minerals Technologies Inc. (NYSE:MTX) today declared a regular quarterly dividend of $0.025 (two and one-half cents) a share on the company's common stock. The dividend is payable on March 15, 2002 to stockholders of record on March 6, 2002.

Minerals Technologies Inc. is a global resource- and technology-based organization that develops and produces performance-enhancing minerals, mineral-based and synthetic mineral products for the paper, steel, polymer and other manufacturing industries. The company reported sales of $684.4 million in 2001.

For further information about Minerals Technologies Inc., call 1-888-MTX-NEWS (689-6397); or, look on the Internet at http://www.mineralstech.com/