With dozens of years old, Nga Son mangrove trees are quite thick, 5-7m high, the sour cork trees are even higher than 10m. With Mr. Mai Van Cong, Secretary of the Party Committee of Nga Thuy commune (Nga Son) and some local people, we went down the mangrove forest which was full of life. Although I have returned to this “green wall” nearly a dozen times, each time I come here, I have more interesting experiences. Standing on the sea dyke adjacent to the mouth of the Len River, zooming in on the green color, the end of the forest cannot be seen with the naked eye. According to research, the length of this coastal mangrove forest is more than 5 km, extending through the coastal area of ​​Nga Tan, Nga Thuy, Nga Tien, and Nga Thai communes. The deeper you go into the forest, a cool air spreads. The forest is a “crowded” of swamp plants, such as: cork, mangrove, tiger, parrot, creating a mutual plant population, resisting the harshness of storms and tidal waves. The forest trees here are on average 5 to 7 m high, many cork oak trees are about 10 m high. From the shaggy trunks, sprouted a dense root system like millions of arms embracing the marshy ground. Under the trees, when the tide recedes, all kinds of crabs, fishes, goby fish… fences and runs away when they see people’s shadows. That is to see, the “green lung” at this Nga Son estuary is an important habitat for aquatic species to grow and develop. This place is considered desolate, quite far from these residential areas, it is also the shelter and feeding place of many migratory birds, especially white storks and many native birds. Formerly deputy director of the Agriculture and Rural Development Department of Nga Son district, who was assigned to monitor and manage the district’s mangrove forests, Mr. Mai Van Cong knows quite well the development history of each area of ​​the forest. According to him, with 450 hectares of coastal wetlands, from 1995 to 1996, Nga Son district was supported to plant mangroves under the sponsorship program of the Vietnam Red Cross. In the years 2005 – 2006, the forest continued to be intercropped and expanded by the Government’s new project of 5 million hectares of forest. According to management data of the District Department of Agriculture and Rural Development, the area of ​​Nga Son mangrove forest is 347 hectares, of which Nga Thuy commune has 290 hectares. Currently, there are more than 20 local households in the district contracted to protect each forest area, so the conservation of the mangrove forest is quite good. When we came here, it was also the season when the mangrove trees were in bloom. According to local people, from April to July every year, the color of the flowers of tiger, parrot, cork, and mangrove species cover the whole forest. This is also the time, hundreds of households in the area bring tens of thousands of honey bee colonies to the forest edge to take advantage of the huge source of flowers. Honey from mangrove flowers has a characteristic aroma, light sweetness, and is loved by many people. Through each flowering season, the fruits of forest trees continue to fall into the swamp, many young buds and buds bloom, continue to grow and expand to the surrounding areas. The roots continue to deepen, creating a strong tree position, playing the role of preventing wind and waves, and protecting the safety of the dike. Inside the forest, the brackish water aquaculture area is considered the second largest in Thanh Hoa province, which is protected from storms and high tides. Well-preserved, Nga Son mangrove forest is considered to have the largest biomass in Thanh Hoa today with a system of mature trees that are decades old. The forest has been covered with a permanent green color, in addition to protecting the ecological environment, it also creates many livelihoods for residents around the area.

The stone is mined from the quarry of the company, after grinding, grinding into stone 1-2. Preeminent magnetism of new building materials Being put into trial production since May 2018, up to now, the sand crushed source from stone has been promoting its superiority as well as attraction to the construction market. Mr. Mai The Tinh – Director of Phu Son Trading Company Limited (Nga Son District, Thanh Hoa Province) said: “With abundant raw materials from the limestone quarries in the province in particular, and grinding technology modern treatment of impurities before putting finished products on the market; The durability of buildings is also appreciated higher than natural sand, which is the advantages that this new building material shows. As an enterprise located in Nga Son district (Thanh Hoa), for a long time, the supply of natural sand for its construction works as well as the district market has faced many difficulties when the sand reserve in the host area. The weak point is that the salty sand can only be leveled, so it is largely limited in the construction works, to meet the demand, the construction sand has to be imported from other districts such as: Thieu Hoa, Ha Trung, Vinh Loc … Large transportation costs leading to higher costs make investment in construction face many difficulties. Mr. Tinh added: At the end of 2017, after field testing from some southern markets as well as abroad, the Company applied and invented a new investment in a production line of crushed sand from rock at a cost. only equal to 20% (about 20 billion VND) compared with the lines imported from abroad. Crushed sand products will contribute to help businesses create a closed production process. The stone is mined from the quarry of the Company after grinding, grinding finished products (stone 1-2), will be screened, classified and put into the system of crushers, small screening into sand. The next step, crushed sand will be put into the system of sedimentation tanks, wash and treat impurities before the finished product is sold to the market. In order to ensure the environment, during the production and grinding process, there is a dust misting system. The process of putting into sedimentation tanks, washing, stone dust will also be deposited and reused as bricks … Thus, the production of crushed sand will be very suitable for quarry mining enterprises, increasing the first choice. private businesses. Mr. Mai Van Nguyen – Production executive officer of Phu Son Trading Co., Ltd. said: With an output of 500m3 / day, the unit is providing for all projects and works on construction in Nga Son district. . In addition to the superiority of the product, with the automated process, only 2 workers to operate the line are contributing to reduce labor costs, reduce human labor, and lower product costs. Meanwhile, according to enterprises in Nga Son district, materials from crushed sand are the number one choice among many large construction projects as well as small construction needs. among the people. In addition to the durability of the project, sand crushed materials also help businesses, people reduce the cost of transfer, cost … Opportunities open for businesses Mr. Luu Van Hai – Head of Economic – Infrastructure Division of Nga Son district said: With the characteristics of the district bordering the sea, the sand reserve is mostly salty, the introduction of crushed sand in the area is contributing to solving the problems. difficulties for businesses in construction investment. In addition, the Provincial People’s Committee also encourages the use of crushed sand in construction works, so this source of construction materials is currently popular and popular. “One of the typical projects using crushed sand such as: The project to solidify the Hung Long canal, through the area of ​​Nga Son town, Thanh Hoa has been put into use and the durability has been proven over time”, Mr. Hai cited. Conduct sorting and put into the system of crushers, small screening into sand. However, in addition to the superiority in production as well as the durability of the buildings, the development of this building material source still faces some difficulties. Specifically, according to Mr. Hai, this new material source has not been disseminated, the number of units investing in the production line is not much, leading to the competition on product prices is not high. If it is soon popularized for construction investment and more widely, this new source of construction materials will be a gradually replacing material source for natural sand and gravel. Learning from enterprises, Mr. Nguyen Trong Cuong – Deputy Director of Nien Cuong Co., Ltd. (Nghi Son town, Thanh Hoa) exchanged: Currently, the source of crushed sand material has been one or two units in the area. production investment town. On the business side, crushed sand contributes to increasing investment choices, making use of raw materials in the mining process … However, Mr. Cuong cannot help but wonder when this product has not yet been popularized. , product cost is higher than natural sand, leading to difficulties and barriers in the selection of projects and works. According to research, the province has 2 grinding sand production lines with a capacity of 150 tons / hour of Phu Son Trading Co., Ltd. (Nga Son district) and Ha Lien Construction and Trade Co., Ltd. (Nong district). Drain). There are also a number of small production lines such as Nghi Son town … According to the construction material development plan to 2025, with a vision to 2035 of the province, crushed sand from stone will be developed in many areas. The mine sector is available with raw materials to supply the market, with a total expected capacity of 1.9 million m3 / year. This is considered an open opportunity for businesses in the province to invest and develop.