APPENDIX II
Letters of Certification

ROAN INDUSTRIES, INC.
November 10, 1986

Mr. Hugh Bogle
Roan Industries Inc.
P.O. Box 39
West Chester, PA 19380

Dear Mr. Bogle,

In May, July and August of 1986 we submitted to Ambric Testing Inc. five pairs of cement samples, each consisting of one blank and one Roan Industries' RI85 grinding aid grind. These sample pairs were made at three cement plants and include all three cement types. These samples are identified in the attached table. Ambric tested these samples in strict accordance with ASTM C465-85a, "Standard Test Method for Processing Additions for Use in the Manufacture of Hydraulic Cements."Ambric has certified that the results of these tests conform in all respects to ASTM 0465-85a requirements. Copies of the Ambric letters certifying the results of the testing for each pair of samples are attached.

Very truly yours,

Charles E. Buchanan Jr.

SUMMARY OF SAMPLES SENT TO AMBRIC TESTING, INC.
Samples were tested by ASTM-C465-85a
Roan ID#	Cement Plant	Type	Grinding Aid Added
B253	Keystone	I	blank
B265	Keystone	I	RI85
B782	Giant	I	blank
B785	Giant	I	RI85
A825	Coplay	II	blank
A835	Coplay	II	RI85
A807	Coplay	III	blank
A812	Coplay	III	RI85
B995	Keystone	III	blank
B998	Keystone	III	RI85

ROAN INDUSTRIES, INC.
November 10, 1986

Mr. Hugh Bogle
Roan Industries Inc.
P.O. Box 39
West Chester, PA 19380

Dear Mr. Bogle,

On November 4, 1985 we made a test of type I cements at Keystone Cement Co., Bath PA. The blank contained no grinding aid and the test cement contained approximately 0.06% RI-85. These samples were given Roan lab numbers B253 and B265 and were submitted to Ambric Testing Inc. and were assigned their laboratory number 15486.

Ambric tested these samples in strict accordance with ASTM C465-85a, "Standard Test Method for Processing Additions for Use in the Manufacture of Hydraulic Cements." Ambric has certified that their results indicate compliance with ASTM C465-85a in all respects. A copy of the Ambric report detailing the results of the testing for this pair of samples is attached.

Very truly yours,

Charles E. Buchanan Jr.

Keystone Cement Company
November 18, 1995

Mr. Charles E . Buchanan Jr .
Roan Industries Inc.
7278 Park Drive
Bath PA 18017

On November 4, 1985 you were allowed to use Keystone Cement Companys' Bath PA plant for a test run of type I cement for certification of Roans' grinding aid. RI-85. Based on your report, there was a blank run made using no grinding aid, and a test cement run made utilizing approximately 0.06% addition of RI-85.

Very truly yours.

Robert Foust,
Chief Chemist

Ambric Testing Inc.
November 7, 1986

Roan Industries, Inc.
P.O. Box 39
West Chester, PA. 19380

Attn: Mr. Hugh A. Bogle

Gentlemen:

We hereby certify that we have performed laboratory tests on one pair of cement samples for conformation to the requirements of ASTM C-465 for Roan Industries, Inc. Our test report is identified as Laboratory Number 15486, Keystone Type I. The results of these tests conform in all respects to the requirements of ASTM C-465-85a "Processing Additions for Use in the Manufacture of Hydraulic Cements". Separate reports were issued tabulating the test data developed.

Very truly yours,

AMBRIC TESTING, INC.

D. D. Meisel, P. E., FACI

DDM/jmc

Ambric Testing Inc.
November 7, 1986

Roan Industries, Inc.
P.O. Box 39
West Chester, PA 19380

Attn: Mr. Hugh A. Bogle

Laboratory No: 15486

Gentlemen:

In accordance with your request, we have completed our laboratory testing program of material submitted by your firm May 2, 1986. Tests were performed on three samples of cement consisting of a reference sample and two samples consisting of a grinding aid, in strict accordance with ASTM C-465-85a "Standard Test Method for Processing Additions for Use in the Manufacture of Hydraulic Cements". The submitted samples were identified as Keystone Type I B253 (Blank), Keystone Type I B246 (RI77AA), and Keystone Type I B265 (RI-85).

The test results are as follows:

Continued ...........

ROAN INDUSTRIES, INC.
November 10, 1986

Mr. Hugh Bogle
Roan Industries Inc.
P.O. Box 39
West Chester, PA 19380

Dear Mr. Bogle,

On June 9, 1986 we made a test of type I cements at Giant Cement Co, Harleyville, SC. The blank contained no grinding aid and the test cement contained approximately 0.06% RI-85. These samples were given Roan lab numbers B782 and B785 and were submitted to Ambric Testing Inc. They were assigned their laboratory number 15486.

Ambric tested these samples in strict accordance with ASTM C465-85a, "Standard Test Method for Processing Additions for Use in the Manufacture of Hydraulic Cements." Ambric has certified that their results indicate compliance with ASTM C465-85a in all respects. A copy of the Ambric report detailing the results of the testing for this pair of samples is attached.

Very truly yours,

Charles E. Buchanan Jr.

Giant Cement Company
July 16, 1986

Mr. Charles E. Buchanan Jr
Roan Industries Inc.
7278 Park Drive
Bath PA 18014

On June 9, 1986 you were allowed to use Giant Cements Harleyville SC plant for a test run of type I cement for certification of Roans' grinding aid, RI-85. Based on your report, there was a blank run made using no grinding aid, and a test cement run made utilizing approximately 0.06% addition of RI85.

Very truly yours,

J. D. Wright
Chief Chemist

Ambric Testing Inc.
November 7, 1986

Roan Industries, Inc.
P.O. Box 39
West Chester, PA. 19380

Attn: Mr. Hugh A. Bogle

Gentlemen:

We hereby certify that we have performed laboratory tests on one pair of cement samples for conformation to the requirements of ASTM C-465 for Roan Industries, Inc. Our test report is identified as Laboratory Number 15486, Giant Cement Type I. The results of these tests conform in all respects to the requirements of ASTM C-465-85a "Processing Additions for Use in the Manufacture of Hydraulic Cements". Separate reports were issued tabulating the test data developed.

Very truly yours,

AMBRIC TESTING, INC.

D. D. Meisel, P. E., FACI

DDM/jmc

Ambric Testing Inc.
November 7, 1986

Roan Industries, Inc.
P.O. Box 39
West Chester, PA 19380

Attn: Mr. Hugh A. Bogle

Laboratory No: 15486

Gentlemen:

In accordance with your request, we have completed our laboratory testing program of material submitted by your firm July 8, 1986. Tests were performed on three samples of cement consisting of a reference sample and two samples consisting of a grinding aid, in strict accordance with ASTM C-465-85a "Standard Test Method for Processing Additions for Use in the Manufacture of Hydraulic Cements". The submitted samples were identified as B782 (Blank) Giant Cament Type I, B779 (RI-77AA) Giant Cament Type I, and B785 (RI-85) Giant Cament Type I.

The test results are as follows:

Continued ...........

ROAN INDUSTRIES, INC.
November 10, 1986

Mr. Hugh Bogle
Roan Industries Inc.
P.O. Box 39
West Chester, PA 19380

Dear Mr. Bogle,

On April 22, 1985 we made a test of type II cements at Coplay Cement Co, Nazareth PA. The blank contained no grinding aid and the test cement contained approximately 0.06% RI-85. These samples were given Roan lab numbers A825 and A835 and were submitted to Ambric Testing Inc. They were assigned their laboratory number 15486.

Ambric tested these samples in strict accordance with ASTM C465-85a, "Standard Test Method for Processing Additions for Use in the Manufacture of Hydraulic Cements." Ambric has certified that their results indicate compliance with ASTM C465-85a in all respects. A copy of the Ambric report detailing the results of the testing for this pair of samples is attached.

Very truly yours,

Charles E. Buchanan Jr.

Coplay Cement Company
July 16, 1985

Mr. Charles E. Buchanan Jr
Roan Industries Inc.
7278 Park Drive
Bath PA 18014

On April 22, 1985 you were allowed to use Coplay Cements Nazareth PA plant for a test run of type II cement for certification of Roans' grinding aid, RI-85. Based on your report, there was a blank run made using no grinding aid, and a test cement run made utilizing approximately 0.06% addition of RI-85.

Very truly yours,

James K. Bayles

Ambric Testing Inc.
November 7, 1986

Roan Industries, Inc.
P.O. Box 39
West Chester, PA. 19380

Attn: Mr. Hugh A. Bogle

Gentlemen:

We hereby certify that we have performed laboratory tests on one pair of cement samples for conformation to the requirements of ASTM C-465 for Roan Industries, Inc. Our test report is identified as Laboratory Number 15486, Complay - Type II. The results of these tests conform in all respects to the requirements of ASTM C-465-85a "Processing Additions for Use in the Manufacture of Hydraulic Cements". Separate reports were issued tabulating the test data developed.

Very truly yours,

AMBRIC TESTING, INC.

D. D. Meisel, P. E., FACI

DDM/jmc

Ambric Testing Inc.
November 7, 1986

Roan Industries, Inc.
P.O. Box 39
West Chester, PA 19380

Attn: Mr. Hugh A. Bogle

Laboratory No: 15486

Gentlemen:

In accordance with your request, we have completed our laboratory testing program of material submitted by your firm May 2, 1986. Tests were performed on three samples of cement consisting of a reference sample and two samples consisting of a grinding aid, in strict accordance with ASTM C-465-85a "Standard Test Method for Processing Additions for Use in the Manufacture of Hydraulic Cements". The submitted samples were identified as Coplay Type II A825 (Blank), Coplay Type II A830 (RI-77AA) and Coplay Type II A835 (RI-85).

The test results are as follows:

Continued ...........

ROAN INDUSTRIES, INC.
November 10, 1986

Mr. Hugh Bogle
Roan Industries Inc.
P.O. Box 39
West Chester, PA 19380

Dear Mr. Bogle,

On April 19, 1985 we made a test of type III cements at Coplay Cement Co, Nazareth PA. The blank contained no grinding aid and the test cement contained approximately 0.06% RI-85. These samples were given Roan lab numbers A807 and A812 and were submitted to Ambric Testing Inc. They were assigned their laboratory number 15486.

Ambric tested these samples in strict accordance with ASTM C465-85a, "Standard Test Method for Processing Additions for Use in the Manufacture of Hydraulic Cements." Ambric has certified that their results indicate compliance with ASTM C465-85a in all respects. A copy of the Ambric report detailing the results of the testing for this pair of samples is attached.

Very truly yours,

Charles E. Buchanan Jr.

Coplay Cement Company
July 16, 1985

Mr. Charles E. Buchanan Jr
Roan Industries Inc.
7278 Park Drive
Bath PA 18014

On April 22, 1985 you were allowed to use Coplay Cements Nazareth PA plant for a test run of type III cement for certification of Roans' grinding aid, RI-85. Based on your report, there was a blank run made using no grinding aid, and a test cement run made utilizing approximately 0.06% addition of RI-85.

Very truly yours,

James K. Bayles

Ambric Testing Inc.
November 7, 1986

Roan Industries, Inc.
P.O. Box 39
West Chester, PA. 19380

Attn: Mr. Hugh A. Bogle

Gentlemen:

We hereby certify that we have performed laboratory tests on one pair of cement samples for conformation to the requirements of ASTM C-465 for Roan Industries, Inc. Our test report is identified as Laboratory Number 15486, Complay Type III. The results of these tests conform in all respects to the requirements of ASTM C-465-85a "Processing Additions for Use in the Manufacture of Hydraulic Cements". Separate reports were issued tabulating the test data developed.

Very truly yours,

AMBRIC TESTING, INC.

D. D. Meisel, P. E., FACI

DDM/jmc

Ambric Testing Inc.
November 7, 1986

Roan Industries, Inc.
P.O. Box 39
West Chester, PA 19380

Attn: Mr. Hugh A. Bogle

Laboratory No: 15486

Gentlemen:

In accordance with your request, we have completed our laboratory testing program of material submitted by your firm May 2, 1986. Tests were performed on three samples of cement consisting of a reference sample and two samples consisting of a grinding aid, in strict accordance with ASTM C-465-85a "Standard Test Method for Processing Additions for Use in the Manufacture of Hydraulic Cements". The submitted samples were identified as Coplay Type III A807 (Blank) 5773, Coplay Type III A807 (RI-77AA) 5699, and Coplay Type II A812 (RI-85) 5690.
The test results are as follows:

Continued ...........

ROAN INDUSTRIES, INC.
November 10, 1986

Mr. Hugh Bogle
Roan Industries Inc.
P.O. Box 39
West Chester, PA 19380

Dear Mr. Bogle,

On July 18, 1986 we made a test of type IIII cements at Keystone Cement Co., Bath PA. The blank contained no grinding aid and the test cement contained approximately 0.06% RI-85. These samples were given Roan lab numbers B995 and B998 and were submitted to Ambric Testing Inc. They were assigned their laboratory number 15486.

Ambric tested these samples in strict accordance with ASTM C465-85a, "Standard Test Method for Processing Additions for Use in the Manufacture of Hydraulic Cements." Ambric has certified that their results indicate compliance with ASTM C465-85a in all respects. A copy of the Ambric report detailing the results of the testing for this pair of samples is attached.

Very truly yours,

Charles E. Buchanan Jr.

Keystone Cement Company
August 18, 1996

Mr. Charles E . Buchanan Jr .
Roan Industries Inc.
7278 Park Drive
Bath PA 18017

On July 18, 1986 you were allowed to use Keystone Cement Companys' Bath PA plant for a test run of type III cement for certification of Roans' grinding aid. RI-85. Based on your report, there was a blank run made using no grinding aid, and a test cement run made utilizing approximately 0.06% addition of RI-85.

Very truly yours.

Robert Foust,
Chief Chemist

Ambric Testing Inc.
November 7, 1986

Roan Industries, Inc.
P.O. Box 39
West Chester, PA. 19380

Attn: Mr. Hugh A. Bogle

Gentlemen:

We hereby certify that we have performed laboratory tests on one pair of cement samples for conformation to the requirements of ASTM C-465 for Roan Industries, Inc. Our test report is identified as Laboratory Number 15486, Keystone III. The results of these tests conform in all respects to the requirements of ASTM C-465-85a "Processing Additions for Use in the Manufacture of Hydraulic Cements". Separate reports were issued tabulating the test data developed.

Very truly yours,

AMBRIC TESTING, INC.

D. D. Meisel, P. E., FACI

DDM/jmc

Ambric Testing Inc.
November 7, 1986

Roan Industries, Inc.
P.O. Box 39
West Chester, PA 19380

Attn: Mr. Hugh A. Bogle

Laboratory No: 15486

Gentlemen:

In accordance with your request, we have completed our laboratory testing program of material submitted by your firm August 21, 1986. Tests were performed on two samples of cement consisting of a reference sample and one samples consisting of a grinding aid, in strict accordance with ASTM C-465-85a "Standard Test Method for Processing Additions for Use in the Manufacture of Hydraulic Cements". The submitted samples were identified as Keystone Type III B995 (Blank) and Keystone Type III B998 (RI-85).

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