1954
The Palawan Quicksilver Mines was established in 1954. This was a highly successful mining operation. Mercury from the mines was shipped to Japan until 1975 when the company ceased mining operations in Palawan.

1956
The strength of the Marsman organization was put to test by the death of Jan Marsman. Mary assumed the management of the business and competently carried on with the tasks left by her husband. However, the organization was beset by problems including the repayment of loans availed of for the rehabilitation of companies during the post-war years. Three mining companies in Bicol had to be shut down and control of the Itogon-Suyoc mines was lost. Mary Marsman passed away in 1963, leaving the company under the management of able caretakers.

1960s
The Retail Trade Nationalization law, which was created to break the control foreign businesses enjoyed on Philippine retail trade, inadvertantly affected most of the Marsmans' food and equipment distribution businesses since it would necessitate setting up alliances with middlemen. This led the company to focus its resources on its Pharmaceutical distribution business. This division, begun in one of the company's warehouses in the 1940's, grew considerably, expanding into repackaging and manufacturing in the latter part of the 1970s.

1967
The Mary Blythe Petersen Marsman Foundation, Inc. was established on March 17, 1967, three years after her death, to administer and manage the assets left in trust under the last will and testament of Mrs. Mary Marsman and to devote its income to scientific, educational and charitable purposes. The Marsman Foundation was placed in control of 50% of all the company's assets. Through the years, MFI has faithfully complied with its mandate, expanding its projects from scholarships and donations to genuine community development work including health care, livelihood and cooperative development and values formation..

1968
The year 1968 heralded a new era for the Marsman organization when management returned to family hands under the leadership of George W. Drysdale, whose wife, Anne, is the only child of Jan and Mary Marsman. The two met at Northwestern University in the United States in 1949 and got married soon after. George Drysdale had worked for the US Steel Corporation before coming to the Philippines to work in the different divisions of Marsman and Company from 1954 to 1957.

Under his management, Marsman & Company, Inc. was able to free itself from all legal and financial obligations it had assumed for some of its associated mining companies. George Drysdale was instrumental in focusing the company's investments towards development, expansion and diversification into agribusiness, food processing, tours and travel, real estate and health care.

1969
In 1950, the dreaded mosaic virus disease wiped out the Marsmans' 7,500-hectare abaca plantation in Davao. This event eventually directed the Marsmans toward bananas and in 1969, The Marsman Estate Plantation, Inc. (MEPI) was established, one of the first banana plantations in Mindanao.

At present, MEPI produces the highest per-hectare yield in the banana industry. Since its creation in 1969, MEPI has become one of the brightest points in Philippine agriculture, a shining example of Philippine presence in the dynamic and competitive global agribusiness industry.

1971
The Nova Vista Management and Development Corporation, established in 1971, traces its roots as far back as the 1940's when it was still an abaca plantation called the Moro Improvement and Trading Corporation. The area was converted into a coconut plantation after the widespread mosaic disease devastated the abaca plants. The coconut plantation, renamed Tagnanan Estate, Inc., was placed under CARP and was awarded to its 332 beneficiaries.

In 1992, the property was converted from a coconut plantation to a banana plantation now known as Nova Vista. In May 1999, a 180 hectare section of the plantation was spun off to create the MD Isalon Organic Banana Agri Ventures, Inc.

1976
Camarines Minerals, Inc. (CMI) was organized in 1976 to manage and oversee the mining properties, operations and interests of the Marsman-Drysdale Group in the Bicol Region. As the holding and management company of the Group's mining interests, it controls more than 3,000 hectares of the Group's gold mining claims in the Philippines.

1979
Marsman Tours and Travel was organized in 1979 in response to the government's call to develop the booming tourist industry. The Inbound Tours division was established when Marsman's European pharmaceutical principals suggested that the Marsmans should venture into tourism. Marsman's pharmaceutical distributors, constantly travelling throughout the Philippines, were considered to be highly knowledgeable about the country's potential tourist attractions. Encouraged to develop the country's tourism industry, Marsman and Company sought assistance from the government, which readily gave support by providing in-depth training and seminars.

1986
The Oro Verde plantation is one of the pioneers in the Philippine mango industry. It was incorporated in 1986 as a member of MDAHI and began its commercial operations in 1997.